| acanthocephalan | (noun) any of various worms living parasitically in intestines of vertebrates having a retractile proboscis covered with many hooked spines | Synonyms: spiny-headed worm |
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| agalactia | (noun) a condition in which milk is not secreted in the mother's breasts after her child has been delivered | Synonyms: agalactosis |
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| agalactosis | (noun) a condition in which milk is not secreted in the mother's breasts after her child has been delivered | Synonyms: agalactia |
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| ala | (noun) a wing of an insect | - |
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| (noun) a flat wing-shaped process or winglike part of an organism | - |
| alabaster | (adjective) of or resembling alabaster | Synonyms: alabastrine |
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| (noun) a very light white | - |
| (noun) a compact fine-textured, usually white gypsum used for carving | - |
| (noun) a hard compact kind of calcite | Synonyms: Mexican onyx, onyx marble, oriental alabaster |
| alabastrine | (adjective) of or resembling alabaster | Synonyms: alabaster |
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| alacritous | (adjective) quick and eager | - |
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| alacrity | (noun) liveliness and eagerness | Synonyms: briskness, smartness |
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| alalia | (noun) paralysis of the vocal cords resulting in an inability to speak | - |
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| alanine | (noun) a crystalline amino acid that occurs in many proteins | - |
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| alar | (adjective) of or relating to the axil | Synonyms: axillary |
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| (adjective) having or resembling wings | Synonyms: alary, aliform, wing-shaped |
| alarm | (noun) a device that signals the occurrence of some undesirable event | Synonyms: alarm system, warning device |
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| (noun) a clock that wakes a sleeper at some preset time | Synonyms: alarm clock |
| (noun) an automatic signal (usually a sound) warning of danger | Synonyms: alarum, alert, warning signal |
| (noun) fear resulting from the awareness of danger | Synonyms: consternation, dismay |
| (verb) warn or arouse to a sense of danger or call to a state of preparedness | Synonyms: alert |
| (verb) fill with apprehension or alarm; cause to be unpleasantly surprised | Synonyms: appal, appall, dismay, horrify |
| alarmed | (adjective) experiencing a sudden sense of danger | - |
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| alarming | (adjective) frightening because of an awareness of danger | - |
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| alarmingly | (adverb) in an alarming manner | - |
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| alarmism | (noun) needless warnings | - |
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| alarmist | (noun) a person who alarms others needlessly | - |
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| alarum | (noun) an automatic signal (usually a sound) warning of danger | Synonyms: alarm, alert, warning signal |
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| alary | (adjective) having or resembling wings | Synonyms: alar, aliform, wing-shaped |
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| alas | (adverb) by bad luck | Synonyms: regrettably, unfortunately, unluckily |
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| alastrim | (noun) a mild form of smallpox caused by a less virulent form of the virus | Synonyms: Cuban itch, Kaffir pox, milk pox, pseudosmallpox, pseudovariola, variola minor, West Indian smallpox, white pox |
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| alate | (adjective) (of seeds or insects) having winglike extensions | Synonyms: alated |
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| alated | (adjective) (of seeds or insects) having winglike extensions | Synonyms: alate |
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| amygdala | (noun) an almond-shaped neural structure in the anterior part of the temporal lobe of the cerebrum; intimately connected with the hypothalamus and the hippocampus and the cingulate gyrus; as part of the limbic system it plays an important role in motivation and emotional behavior | Synonyms: amygdaloid nucleus, corpus amygdaloideum |
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| andryala | (noun) any plant of the genus Andryala having milky sap and heads of bright yellow flowers | - |
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| antimalarial | (noun) a medicinal drug used to prevent or treat malaria | Synonyms: antimalarial drug |
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| appealable | (adjective) capable of being appealed especially to a higher tribunal | - |
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| astragalar | (adjective) of or relating to the anklebone | - |
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| autoalarm | (noun) a radio receiving device used on ships that rings an alarm bell when a distress signal is received. | Synonyms: auto-alarm |
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| avalanche | (noun) a slide of large masses of snow and ice and mud down a mountain | - |
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| (noun) a sudden appearance of an overwhelming number of things | - |
| (verb) gather into a huge mass and roll down a mountain, of snow | Synonyms: roll down |
| baccalaureate | (noun) an academic degree conferred on someone who has successfully completed undergraduate studies | Synonyms: bachelor's degree |
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| (noun) a farewell sermon to a graduating class at their commencement ceremonies | - |
| balaclava | (noun) a cap that is close-fitting and woolen and covers all of the head but the face | Synonyms: balaclava helmet |
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| balagan | (noun) a word for chaos or fiasco borrowed from modern Hebrew (where it is a loan word from Russian) | - |
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| balalaika | (noun) a stringed instrument that has a triangular body and three strings | - |
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| balance | (noun) a scale for weighing; depends on pull of gravity | - |
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| (noun) a weight that balances another weight | Synonyms: counterbalance, counterpoise, counterweight, equaliser, equalizer |
| (noun) a wheel that regulates the rate of movement in a machine; especially a wheel oscillating against the hairspring of a timepiece to regulate its beat | Synonyms: balance wheel |
| (noun) harmonious arrangement or relation of parts or elements within a whole (as in a design) | Synonyms: proportion, proportionality |
| (noun) (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane | Synonyms: correspondence, symmetricalness, symmetry |
| (noun) equality between the totals of the credit and debit sides of an account | - |
| (noun) the difference between the totals of the credit and debit sides of an account | - |
| (noun) something left after other parts have been taken away | Synonyms: remainder, residual, residue, residuum, rest |
| (noun) equality of distribution | Synonyms: counterbalance, equilibrium, equipoise |
| (noun) a state of equilibrium | - |
| (verb) hold or carry in equilibrium | Synonyms: poise |
| (verb) compute credits and debits of an account | - |
| (verb) bring into balance or equilibrium | Synonyms: equilibrate, equilibrise, equilibrize |
| (verb) be in equilibrium | - |
| balanced | (adjective) being in a state of proper equilibrium | - |
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| balancer | (noun) either of the rudimentary hind wings of dipterous insects; used for maintaining equilibrium during flight | Synonyms: halter, haltere |
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| (noun) an acrobat who balances himself in difficult positions | - |
| balancing | (noun) getting two things to correspond | Synonyms: reconciliation |
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| balanitis | (noun) inflammation of the head of the penis | - |
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| balanoposthitis | (noun) inflammation of both the head of the penis and the foreskin | - |
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| balas | (noun) a pale rose-colored variety of the ruby spinel | Synonyms: balas ruby |
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| balata | (noun) a tropical hardwood tree yielding balata gum and heavy red timber | Synonyms: balata tree, beefwood, bully tree, Manilkara bidentata |
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| (noun) when dried yields a hard substance used e.g. in golf balls | Synonyms: gutta balata |
| cabala | (noun) an esoteric or occult matter resembling the Kabbalah that is traditionally secret | Synonyms: cabbala, cabbalah, kabala, kabbala, kabbalah, qabala, qabalah |
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| cabbala | (noun) an esoteric or occult matter resembling the Kabbalah that is traditionally secret | Synonyms: cabala, cabbalah, kabala, kabbala, kabbalah, qabala, qabalah |
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| cabbalah | (noun) an esoteric or occult matter resembling the Kabbalah that is traditionally secret | Synonyms: cabala, cabbala, kabala, kabbala, kabbalah, qabala, qabalah |
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| calaba | (noun) West Indian tree having racemes of fragrant white flowers and yielding a durable timber and resinous juice | Synonyms: Calophyllum calaba, Santa Maria tree |
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| calabash | (noun) bottle made from the dried shell of a bottle gourd | Synonyms: gourd |
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| (noun) a pipe for smoking; has a curved stem and a large bowl made from a calabash gourd | Synonyms: calabash pipe |
| (noun) tropical American evergreen that produces large round gourds | Synonyms: calabash tree, Crescentia cujete |
| (noun) round gourd of the calabash tree | - |
| (noun) Old World climbing plant with hard-shelled bottle-shaped gourds as fruits | Synonyms: bottle gourd, Lagenaria siceraria |
| calabazilla | (noun) perennial vine of dry parts of central and southwestern United States and Mexico having small hard mottled green inedible fruit | Synonyms: buffalo gourd, Cucurbita foetidissima, Missouri gourd, prairie gourd, prairie gourd vine, wild pumpkin |
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| calabura | (noun) a fast-growing tropical American evergreen having white flowers and fleshy edible fruit; a bark yields a silky fiber used in cordage and wood is valuable for staves | Synonyms: calabur tree, Jamaican cherry, Muntingia calabura, silk wood, silkwood |
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| caladenia | (noun) any of various orchids of the genus Caladenia | - |
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| caladium | (noun) any plant of the genus Caladium cultivated for their ornamental foliage variously patterned in white or pink or red | - |
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| calamari | (noun) (Italian cuisine) squid prepared as food | Synonyms: calamary, squid |
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| calamary | (noun) (Italian cuisine) squid prepared as food | Synonyms: calamari, squid |
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| calamine | (noun) a white mineral; a common ore of zinc | Synonyms: hemimorphite |
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| calamint | (noun) perennial aromatic herbs growing in hedgerows or scrub or open woodlands from western Europe to central Asia and in North America | - |
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| calamitous | (adjective) (of events) having extremely unfortunate or dire consequences; bringing ruin | Synonyms: black, disastrous, fatal, fateful |
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| calamity | (noun) an event resulting in great loss and misfortune | Synonyms: cataclysm, catastrophe, disaster, tragedy |
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| calamondin | (noun) a fruit of the calamondin tree. | - |
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| calamus | (noun) the hollow spine of a feather | Synonyms: quill, shaft |
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| (noun) any tropical Asian palm of the genus Calamus; light tough stems are a source of rattan canes | - |
| (noun) perennial marsh plant having swordlike leaves and aromatic roots | Synonyms: Acorus calamus, flagroot, myrtle flag, sweet calamus, sweet flag |
| (noun) the aromatic root of the sweet flag used medicinally | - |
| calando | (adjective) (music) gradually decreasing in tempo and volume | - |
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| calanthe | (noun) any of various showy orchids of the genus Calanthe having white or yellow or rose-colored flowers and broad leaves folded lengthwise | - |
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| calash | (noun) the folding hood of a horse-drawn carriage | Synonyms: calash top, caleche |
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| (noun) a woman's large folded hooped hood; worn in the 18th century | Synonyms: caleche |
| cantala | (noun) Philippine plant yielding a hard fibre used in making coarse twine | Synonyms: Agave cantala, maguey |
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| (noun) hard fiber used in making coarse twine; from Philippine agave plants | Synonyms: Cebu maguey, manila maguey |
| cardinalate | (noun) the office of cardinal | Synonyms: cardinalship |
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| (noun) (Roman Catholic Church) the body of all cardinals of the church; elects and advises the pope | Synonyms: College of Cardinals, Sacred College, Sacred College of Cardinals |
| catalase | (noun) enzyme found in most plant and animal cells that functions as an oxidative catalyst; decomposes hydrogen peroxide into oxygen and water | - |
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| catalatic | (adjective) of or relating to the enzyme catalase | - |
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| cephalalgia | (noun) pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs | Synonyms: head ache, headache |
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| cephalaspid | (noun) extinct jawless fish of the Devonian with armored head | Synonyms: osteostracan |
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| chachalaca | (noun) slender arboreal guan resembling a wild turkey; native to Central America and Mexico; highly regarded as game birds | - |
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| chalaza | (noun) one of two spiral bands of tissue connecting the egg yolk to the enclosing membrane at either end of the shell | - |
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| (noun) basal part of a plant ovule opposite the micropyle; where integument and nucellus are joined | - |
| chalazion | (noun) a small sebaceous cyst of the eyelid resulting when a Meibomian gland is blocked | Synonyms: Meibomian cyst |
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| cicala | (noun) stout-bodied insect with large membranous wings; male has drum-like organs for producing a high-pitched drone | Synonyms: cicada |
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| cobalamin | (noun) a B vitamin that is used to treat pernicious anemia | Synonyms: antipernicious anemia factor, cyanocobalamin, vitamin B12 |
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| contralateral | (adjective) on or relating to the opposite side (of the body) | - |
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| counterbalance | (noun) a weight that balances another weight | Synonyms: balance, counterpoise, counterweight, equaliser, equalizer |
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| (noun) a compensating equivalent | Synonyms: offset |
| (noun) equality of distribution | Synonyms: balance, equilibrium, equipoise |
| (verb) oppose and mitigate the effects of by contrary actions | Synonyms: counteract, countervail, neutralize |
| (verb) contrast with equal weight or force | Synonyms: oppose |
| (verb) adjust for | Synonyms: compensate, correct, even off, even out, even up, make up |
| counterbalanced | (adjective) brought into equipoise by means of a weight or force that offsets another | Synonyms: counterpoised |
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| crotalaria | (noun) any of various plants of the genus Crotalaria having inflated pods within which the seeds rattle; used for pasture and green-manure crops | Synonyms: rattlebox |
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| cyanocobalamin | (noun) a B vitamin that is used to treat pernicious anemia | Synonyms: antipernicious anemia factor, cobalamin, vitamin B12 |
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| dalasi | (noun) the basic unit of money in Gambia | - |
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| dihydroxyphenylalanine | (noun) amino acid that is formed in the liver and converted into dopamine in the brain | Synonyms: dopa |
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| enalapril | (noun) an ACE inhibitor (trade name Vasotec) that blocks the formation of angiotensin in the kidney and so results in vasodilation; administered after heart attacks | Synonyms: Vasotec |
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| encephalartos | (noun) any of numerous cycads of the genus Encephalartos having stout cylindrical trunks and a terminal crown of long often spiny pinnate leaves | - |
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| epithalamium | (noun) an ode honoring a bride and bridegroom | - |
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| escalade | (noun) an act of scaling by the use of ladders (especially the walls of a fortification) | - |
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| (verb) climb up and over | - |
| escalader | (noun) someone who gains access by the use of ladders | - |
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| escalate | (verb) increase in extent or intensity | Synonyms: intensify, step up |
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| escalation | (noun) an increase to counteract a perceived discrepancy | - |
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| escalator | (noun) a stairway whose steps move continuously on a circulating belt | Synonyms: moving staircase, moving stairway |
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| (noun) a clause in a contract that provides for an increase or a decrease in wages or prices or benefits etc. depending on certain conditions (as a change in the cost of living index) | Synonyms: escalator clause |
| exhalation | (noun) the act of expelling air from the lungs | Synonyms: breathing out, expiration |
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| (noun) exhaled breath | Synonyms: halitus |
| extragalactic | (adjective) outside or beyond a galaxy | - |
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| falafel | (noun) small croquette of mashed chick peas or fava beans seasoned with sesame seeds | Synonyms: felafel |
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| falanga | (noun) a form of torture in which the soles of the feet are beaten with whips or cudgels | Synonyms: bastinado |
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| falangist | (noun) a Spanish member of General Franco's political party | Synonyms: phalangist |
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| gala | (noun) a gay festivity | Synonyms: blowout, gala affair, jamboree |
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| galactagogue | (noun) agent that induces milk secretion | - |
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| galactic | (adjective) of or relating to a galaxy (especially our galaxy the Milky Way) | - |
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| (adjective) inconceivably large | Synonyms: astronomic, astronomical |
| galactocele | (noun) a cystic tumor containing milk or a milky substance (especially in the mammary glands) | - |
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| galactose | (noun) a simple sugar found in lactose | Synonyms: brain sugar |
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| galactosemia | (noun) a genetic disease (autosomal recessive) in which an enzyme needed to metabolize galactose is deficient or absent; typically develops shortly after birth | - |
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| galactosis | (noun) the secretion of milk | - |
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