| abdominocentesis | (noun) centesis of the belly to remove fluid for diagnosis | Synonyms: paracentesis |
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| abducent | (adjective) especially of muscles; drawing away from the midline of the body or from an adjacent part | Synonyms: abducting |
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| (noun) a small motor nerve supplying the lateral rectus muscle of the eye | Synonyms: abducens, abducens nerve, abducent nerve, nervus abducens, sixth cranial nerve |
| acaulescent | (adjective) (of plants) having no apparent stem above ground | Synonyms: stemless |
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| accent | (noun) the relative prominence of a syllable or musical note (especially with regard to stress or pitch) | Synonyms: emphasis, stress |
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| (noun) distinctive manner of oral expression | Synonyms: speech pattern |
| (noun) a diacritical mark used to indicate stress or placed above a vowel to indicate a special pronunciation | Synonyms: accent mark |
| (noun) the usage or vocabulary that is characteristic of a specific group of people | Synonyms: dialect, idiom |
| (noun) special importance or significance | Synonyms: emphasis |
| (verb) put stress on; utter with an accent | Synonyms: accentuate, stress |
| (verb) to stress, single out as important | Synonyms: accentuate, emphasise, emphasize, punctuate, stress |
| accented | (adjective) bearing a stress or accent | Synonyms: stressed |
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| (adjective) (used of syllables) bearing the principle stress, usually accompanied by a change in pitch | Synonyms: tonic |
| accenting | (noun) the act of giving special importance or significance to something | Synonyms: accentuation, emphasizing |
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| accentor | (noun) small sparrow-like songbird of mountainous regions of Eurasia | - |
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| accentual | (adjective) (of verse) having a metric system based on stress rather than syllables or quantity | - |
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| (adjective) of or pertaining to accent or stress | - |
| accentuate | (verb) to stress, single out as important | Synonyms: accent, emphasise, emphasize, punctuate, stress |
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| (verb) put stress on; utter with an accent | Synonyms: accent, stress |
| accentuation | (noun) the act of giving special importance or significance to something | Synonyms: accenting, emphasizing |
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| (noun) the use or application of an accent; the relative prominence of syllables in a phrase or utterance | - |
| acentric | (adjective) lacking a centromere | - |
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| (adjective) not centered or having no center | - |
| acquiescent | (adjective) willing to carry out the orders or wishes of another without protest | Synonyms: biddable |
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| acrocentric | (adjective) having a subterminal centromere | - |
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| adducent | (adjective) especially of muscles; bringing together or drawing toward the midline of the body or toward an adjacent part | Synonyms: adducting, adductive |
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| adjacent | (adjective) nearest in space or position; immediately adjoining without intervening space | Synonyms: next, side by side |
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| (adjective) having a common boundary or edge; abutting; touching | Synonyms: conterminous, contiguous, neighboring, neighbouring |
| (adjective) near or close to but not necessarily touching | - |
| adolescent | (adjective) relating to or peculiar to or suggestive of an adolescent | - |
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| (adjective) in the state of development between puberty and maturity | - |
| (adjective) displaying or suggesting a lack of maturity | Synonyms: jejune, juvenile, puerile |
| (adjective) being of the age 13 through 19 | Synonyms: teen, teenage, teenaged |
| (noun) a juvenile between the onset of puberty and maturity | Synonyms: stripling, teen, teenager |
| albescent | (adjective) becoming or shading into white | - |
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| alcalescent | (adjective) tending to become alkaline; slightly alkaline | Synonyms: alkalescent |
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| alkalescent | (adjective) tending to become alkaline; slightly alkaline | Synonyms: alcalescent |
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| amniocentesis | (noun) (pregnancy) extraction by centesis of amniotic fluid from a pregnant woman (after the 15th week of pregnancy) to aid in the diagnosis of fetal abnormalities | Synonyms: amnio |
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| anthropocentric | (adjective) human-centered | - |
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| anthropocentricity | (noun) an inclination to evaluate reality exclusively in terms of human values | Synonyms: anthropocentrism |
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| anthropocentrism | (noun) an inclination to evaluate reality exclusively in terms of human values | Synonyms: anthropocentricity |
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| aplacental | (adjective) having no placenta | - |
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| arborescent | (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arboreous, arboresque, arboriform, dendriform, dendroid, dendroidal, tree-shaped, treelike |
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| arthrocentesis | (noun) removal of fluid from a joint by centesis | - |
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| ascent | (noun) the act of changing location in an upward direction | Synonyms: ascending, ascension, rise |
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| (noun) a movement upward; rise above the ground | Synonyms: ascension, rise, rising |
| (noun) an upward slope or grade (as in a road) | Synonyms: acclivity, climb, raise, rise, upgrade |
| autofluorescent | (adjective) emitting light via self-induced fluorescence | - |
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| barycenter | (noun) (astronomy) the common center of mass around which two or more bodies revolve | - |
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| beneficent | (adjective) doing or producing good | - |
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| (adjective) generous in assistance to the poor | Synonyms: benevolent, eleemosynary, philanthropic |
| bicentenary | (adjective) of or relating to or completing a period of 200 years | Synonyms: bicentennial |
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| (noun) the 200th anniversary (or the celebration of it) | Synonyms: bicentennial |
| bicentennial | (adjective) of or relating to or completing a period of 200 years | Synonyms: bicentenary |
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| (noun) the 200th anniversary (or the celebration of it) | Synonyms: bicentenary |
| bicentric | (adjective) having two centers | - |
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| bioluminescent | (adjective) (of living organisms) emitting light | - |
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| candescent | (adjective) glowing from great heat | - |
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| canescent | (adjective) of greyish white | - |
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| (adjective) covered with fine whitish hairs or down | Synonyms: hoary |
| caulescent | (adjective) (of plants) producing a well-developed stem above ground | Synonyms: cauline, stemmed |
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| celiocentesis | (noun) removal of fluid from the abdomen by centesis | - |
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| cent | (noun) a coin worth one-hundredth of the value of the basic unit | Synonyms: centime, penny |
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| (noun) a fractional monetary unit of several countries | - |
| cental | (noun) a United States unit of weight equivalent to 100 pounds | Synonyms: centner, cwt, hundredweight, quintal, short hundredweight |
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| centare | (noun) a unit of measurement for area, defined as the area of a square with sides of exactly 1 metre; a centiare is 1/100th of an are | Synonyms: square meter, square metre |
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| centas | (noun) 100 centas equal 1 litas in Lithuania | - |
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| centaur | (noun) (classical mythology) a mythical being that is half man and half horse | - |
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| centaury | (noun) any plant of the genus Centaurea | - |
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| (noun) any of various plants of the genus Centaurium | - |
| centavo | (noun) a fractional monetary unit of several countries: El Salvador and Sao Tome and Principe and Brazil and Argentina and Bolivia and Colombia and Cuba and the Dominican Republic and Ecuador and El Salvador and Guatemala and Honduras and Mexico and Nicaragua and Peru and the Philippines and Portugal | - |
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| centenarian | (adjective) being at least 100 years old | - |
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| (noun) someone who is at least 100 years old | - |
| centenary | (adjective) of or relating to or completing a period of 100 years | Synonyms: centennial |
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| (noun) the 100th anniversary (or the celebration of it) | Synonyms: centennial |
| centennial | (adjective) of or relating to or completing a period of 100 years | Synonyms: centenary |
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| (noun) the 100th anniversary (or the celebration of it) | Synonyms: centenary |
| centennially | (adverb) every hundred years; once in a century | - |
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| center | (adjective) of or belonging to neither the right nor the left politically or intellectually | Synonyms: centre |
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| (adjective) equally distant from the extremes | Synonyms: centre, halfway, middle, midway |
| (noun) a position on a basketball team of the player who participates in the jump that starts the game | Synonyms: centre |
| (noun) (American football) the position of the player on the line of scrimmage who puts the ball in play | Synonyms: centre |
| (noun) the position on a hockey team of the player who participates in the face off at the beginning of the game | Synonyms: centre |
| (noun) a building dedicated to a particular activity | Synonyms: centre |
| (noun) mercantile establishment consisting of a carefully landscaped complex of shops representing leading merchandisers; usually includes restaurants and a convenient parking area; a modern version of the traditional marketplace | Synonyms: centre, mall, plaza, shopping center, shopping centre, shopping mall |
| (noun) the piece of ground in the outfield directly ahead of the catcher | Synonyms: center field, centerfield, centre |
| (noun) a cluster of nerve cells governing a specific bodily process | Synonyms: centre, nerve center, nerve centre |
| (noun) the choicest or most essential or most vital part of some idea or experience | Synonyms: centre, core, essence, gist, heart, heart and soul, inwardness, kernel, marrow, meat, nitty-gritty, nub, pith, substance, sum |
| (noun) the object upon which interest and attention focuses | Synonyms: center of attention, centre, centre of attention |
| (noun) the sweet central portion of a piece of candy that is enclosed in chocolate or some other covering | Synonyms: centre |
| (noun) politically moderate persons; centrists | Synonyms: centre |
| (noun) the middle of a military or naval formation | Synonyms: centre |
| (noun) a point equidistant from the ends of a line or the extremities of a figure | Synonyms: centre, midpoint |
| (noun) an area that is approximately central within some larger region | Synonyms: centre, eye, heart, middle |
| (noun) a place where some particular activity is concentrated | Synonyms: centre |
| (noun) (football) the person who plays center on the line of scrimmage and snaps the ball to the quarterback | Synonyms: centre, snapper |
| (noun) (basketball) the person who plays center on a basketball team | Synonyms: centre |
| (noun) (ice hockey) the person who plays center on a hockey team | Synonyms: centre |
| (verb) direct one's attention on something | Synonyms: centre, concentrate, focus, pore, rivet |
| (verb) move into the center | Synonyms: centre |
| (verb) center upon | Synonyms: center on, centre, concentrate on, focus on, revolve about, revolve around |
| centerboard | (noun) a retractable fin keel used on sailboats to prevent drifting to leeward | Synonyms: centreboard, drop keel, sliding keel |
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| centered | (adjective) being or placed in the center | Synonyms: centred |
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| centerfield | (noun) the fielding position of the player on a baseball team who is expected to field balls in the central third of the outfield | Synonyms: center field |
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| (noun) the piece of ground in the outfield directly ahead of the catcher | Synonyms: center, center field, centre |
| centerfielder | (noun) the person who plays center field | Synonyms: center fielder |
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| centerfold | (noun) a magazine center spread; especially a foldout of a large photograph or map or other feature | Synonyms: centrefold |
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| centering | (noun) (American football) putting the ball in play by passing it (between the legs) to a back | Synonyms: centring, snap |
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| (noun) the concentration of attention or energy on something | Synonyms: centring, direction, focal point, focus, focusing, focussing |
| centerline | (noun) a line that bisects a plane figure | Synonyms: center line |
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| centerpiece | (noun) something placed at the center of something else (as on a table) | Synonyms: centrepiece |
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| (noun) the central or most important feature | Synonyms: centrepiece |
| centesimal | (adjective) relating to or divided into hundredths | - |
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| (adjective) the ordinal number of one hundred in counting order | Synonyms: 100th, hundredth |
| centesimo | (noun) a fractional monetary unit of several countries: Panama and Italy and Uruguay and Chile | - |
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| centesis | (noun) (surgery) the act of puncturing a body cavity or organ with a hollow needle in order to draw out fluid | - |
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| centigrade | (adjective) of or relating to a temperature scale on which the freezing point of water is 0 degrees and the boiling point of water is 100 degrees | - |
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| centile | (noun) (statistics) any of the 99 numbered points that divide an ordered set of scores into 100 parts each of which contains one-hundredth of the total | Synonyms: percentile |
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| centiliter | (noun) a metric unit of volume equal to one hundredth of a liter | Synonyms: centilitre, cl |
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| centilitre | (noun) a metric unit of volume equal to one hundredth of a liter | Synonyms: centiliter, cl |
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| centime | (noun) a coin worth one-hundredth of the value of the basic unit | Synonyms: cent, penny |
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| (noun) a fractional monetary unit of several countries: France and Algeria and Belgium and Burkina Faso and Burundi and Cameroon and Chad and the Congo and Gabon and Haiti and the Ivory Coast and Luxembourg and Mali and Morocco and Niger and Rwanda and Senegal and Switzerland and Togo | - |
| centimeter | (noun) a metric unit of length equal to one hundredth of a meter | Synonyms: centimetre, cm |
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| centimetre | (noun) a metric unit of length equal to one hundredth of a meter | Synonyms: centimeter, cm |
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| centimo | (noun) a fractional monetary unit of Venezuela and Costa Rica and Equatorial Guinea and Paraguay and Spain | - |
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| centipede | (noun) chiefly nocturnal predacious arthropod having a flattened body of 15 to 173 segments each with a pair of legs, the foremost pair being modified as prehensors | - |
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| centner | (noun) a United States unit of weight equivalent to 100 pounds | Synonyms: cental, cwt, hundredweight, quintal, short hundredweight |
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| (noun) in some European countries: a unit of weight equivalent to 50 kilograms | - |
| (noun) a unit of weight equal to 100 kilograms in the metric system | Synonyms: doppelzentner, hundredweight, metric hundredweight |
| central | (adjective) in or near a center or constituting a center; the inner area | - |
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| (adjective) serving as an essential component | Synonyms: cardinal, fundamental, key, primal |
| (noun) a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication | Synonyms: exchange, telephone exchange |
| centralisation | (noun) the act of consolidating power under a central control | Synonyms: centralization |
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| (noun) gathering to a center | Synonyms: centralization |
| centralise | (verb) make central | Synonyms: centralize, concentrate |
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| centralised | (adjective) drawn toward a center or brought under the control of a central authority | Synonyms: centralized |
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| centralising | (adjective) tending to draw to a central point | Synonyms: centralizing |
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| centralism | (noun) the political policy of concentrating power in a central organization | - |
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| centralist | (adjective) advocating centralization | Synonyms: centralistic |
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| centralistic | (adjective) advocating centralization | Synonyms: centralist |
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| centrality | (noun) the property of being central | - |
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| centralization | (noun) the act of consolidating power under a central control | Synonyms: centralisation |
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| (noun) gathering to a center | Synonyms: centralisation |
| centralize | (verb) make central | Synonyms: centralise, concentrate |
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| centralized | (adjective) drawn toward a center or brought under the control of a central authority | Synonyms: centralised |
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| centralizing | (adjective) tending to draw to a central point | Synonyms: centralising |
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| centrally | (adverb) in or near or toward a center or according to a central role or function | - |
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| centrarchid | (noun) small carnivorous freshwater percoid fishes of North America usually having a laterally compressed body and metallic luster: crappies, black bass, bluegills, pumpkinseed | Synonyms: sunfish |
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| centre | (adjective) of or belonging to neither the right nor the left politically or intellectually | Synonyms: center |
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| (noun) a position on a basketball team of the player who participates in the jump that starts the game | Synonyms: center |
| (noun) (American football) the position of the player on the line of scrimmage who puts the ball in play | Synonyms: center |
| (noun) the position on a hockey team of the player who participates in the face off at the beginning of the game | Synonyms: center |
| (noun) a building dedicated to a particular activity | Synonyms: center |
| (noun) the piece of ground in the outfield directly ahead of the catcher | Synonyms: center, center field, centerfield |
| (noun) mercantile establishment consisting of a carefully landscaped complex of shops representing leading merchandisers; usually includes restaurants and a convenient parking area; a modern version of the traditional marketplace | Synonyms: center, mall, plaza, shopping center, shopping centre, shopping mall |
| (noun) a cluster of nerve cells governing a specific bodily process | Synonyms: center, nerve center, nerve centre |
| (noun) the choicest or most essential or most vital part of some idea or experience | Synonyms: center, core, essence, gist, heart, heart and soul, inwardness, kernel, marrow, meat, nitty-gritty, nub, pith, substance, sum |
| (noun) the object upon which interest and attention focuses | Synonyms: center, center of attention, centre of attention |
| (noun) the sweet central portion of a piece of candy that is enclosed in chocolate or some other covering | Synonyms: center |
| (noun) politically moderate persons; centrists | Synonyms: center |
| (noun) the middle of a military or naval formation | Synonyms: center |
| (noun) a point equidistant from the ends of a line or the extremities of a figure | Synonyms: center, midpoint |
| (noun) an area that is approximately central within some larger region | Synonyms: center, eye, heart, middle |
| (noun) a place where some particular activity is concentrated | Synonyms: center |
| (noun) (football) the person who plays center on the line of scrimmage and snaps the ball to the quarterback | Synonyms: center, snapper |
| (noun) (basketball) the person who plays center on a basketball team | Synonyms: center |
| (noun) (ice hockey) the person who plays center on a hockey team | Synonyms: center |
| (adjective) equally distant from the extremes | Synonyms: center, halfway, middle, midway |
| (verb) direct one's attention on something | Synonyms: center, concentrate, focus, pore, rivet |
| (verb) move into the center | Synonyms: center |
| (verb) center upon | Synonyms: center, center on, concentrate on, focus on, revolve about, revolve around |
| centreboard | (noun) a retractable fin keel used on sailboats to prevent drifting to leeward | Synonyms: centerboard, drop keel, sliding keel |
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| centred | (adjective) being or placed in the center | Synonyms: centered |
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| centrefold | (noun) a magazine center spread; especially a foldout of a large photograph or map or other feature | Synonyms: centerfold |
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| centrepiece | (noun) something placed at the center of something else (as on a table) | Synonyms: centerpiece |
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| (noun) the central or most important feature | Synonyms: centerpiece |
| centrex | (noun) (CENTRal EXchange) a kind of telephone exchange | - |
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| centric | (adjective) having or situated at or near a center | Synonyms: centrical |
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| centrical | (adjective) having or situated at or near a center | Synonyms: centric |
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| centrifugal | (adjective) tending to move away from a center | - |
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| (adjective) tending away from centralization, as of authority | - |
| (adjective) conveying information to the muscles from the CNS | Synonyms: motor |
| centrifugate | (verb) rotate at very high speed in order to separate the liquids from the solids | Synonyms: centrifuge |
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| centrifugation | (noun) the process of separating substances of different densities by the use of a centrifuge | - |
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| centrifuge | (noun) an apparatus that uses centrifugal force to separate particles from a suspension | Synonyms: extractor, separator |
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| (verb) rotate at very high speed in order to separate the liquids from the solids | Synonyms: centrifugate |
| centring | (noun) (American football) putting the ball in play by passing it (between the legs) to a back | Synonyms: centering, snap |
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| (noun) the concentration of attention or energy on something | Synonyms: centering, direction, focal point, focus, focusing, focussing |
| centriole | (noun) one of a pair of small cylindrical cell organelles near the nucleus in animal cells; composed of nine triplet microtubules and form the asters during mitosis | - |
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