| cacoethes | (noun) an irrational but irresistible motive for a belief or action | Synonyms: mania, passion |
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| cacogenesis | (noun) inability to produce hybrids that are both viable and fertile | - |
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| cacogenics | (noun) the study of the operation of factors causing degeneration in the type of offspring produced | Synonyms: dysgenics |
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| cacography | (noun) poor handwriting | Synonyms: scratch, scrawl, scribble |
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| cacomistle | (noun) raccoon-like omnivorous mammal of Mexico and the southwestern United States having a long bushy tail with black and white rings | Synonyms: Bassariscus astutus, bassarisk, cacomixle, civet cat, coon cat, miner's cat, raccoon fox, ring-tailed cat, ringtail |
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| cacomixle | (noun) raccoon-like omnivorous mammal of Mexico and the southwestern United States having a long bushy tail with black and white rings | Synonyms: Bassariscus astutus, bassarisk, cacomistle, civet cat, coon cat, miner's cat, raccoon fox, ring-tailed cat, ringtail |
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| cacophony | (noun) loud confusing disagreeable sounds | - |
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| (noun) a loud harsh or strident noise | Synonyms: blare, blaring, clamor, din |
| cactus | (noun) any succulent plant of the family Cactaceae native chiefly to arid regions of the New World and usually having spines | - |
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| cad | (noun) someone who is morally reprehensible | Synonyms: blackguard, bounder, dog, heel, hound |
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| cadaster | (noun) a public register showing the details of ownership and value of land; made for the purpose of taxation | Synonyms: cadastre |
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| cadastre | (noun) a public register showing the details of ownership and value of land; made for the purpose of taxation | Synonyms: cadaster |
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| cadaver | (noun) the dead body of a human being | Synonyms: clay, corpse, remains, stiff |
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| cadaverine | (noun) a colorless toxic ptomaine with an unpleasant odor formed during the putrefaction of animal tissue | - |
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| caddie | (noun) an attendant who carries the golf clubs for a player | Synonyms: golf caddie |
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| caddisworm | (noun) larva of the caddis fly; constructs a case of silk covered with sand or plant debris | Synonyms: strawworm |
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| caddy | (noun) a can for storing tea | Synonyms: tea caddy |
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| cadence | (noun) a recurrent rhythmical series | Synonyms: cadency |
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| (noun) the close of a musical section | - |
| (noun) (prosody) the accent in a metrical foot of verse | Synonyms: beat, measure, meter, metre |
| cadency | (noun) a recurrent rhythmical series | Synonyms: cadence |
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| cadenza | (noun) a brilliant solo passage occurring near the end of a piece of music | - |
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| cadet | (noun) a military trainee (as at a military academy) | Synonyms: plebe |
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| cadetship | (noun) the position of cadet | - |
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| cadger | (noun) someone who mooches or cadges (tries to get something free) | Synonyms: mooch, moocher, scrounger |
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| cadmium | (noun) a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores | Synonyms: atomic number 48, Cd |
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| cadre | (noun) a nucleus of military personnel capable of expansion | - |
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| (noun) a small unit serving as part of or as the nucleus of a larger political movement | Synonyms: cell |
| caduceus | (noun) an insignia used by the medical profession; modeled after the staff of Hermes | - |
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| caecilian | (noun) any of the small slender limbless burrowing wormlike amphibians of the order Gymnophiona; inhabit moist soil in tropical regions | Synonyms: blindworm |
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| caecum | (noun) the cavity in which the large intestine begins and into which the ileum opens | Synonyms: blind gut, cecum |
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| caenogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: cainogenesis, cenogenesis, kainogenesis, kenogenesis |
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| caesarean | (noun) the delivery of a fetus by surgical incision through the abdominal wall and uterus (from the belief that Julius Caesar was born that way) | Synonyms: abdominal delivery, C-section, caesarean delivery, caesarean section, caesarian, caesarian delivery, caesarian section, cesarean, cesarean delivery, cesarean section, cesarian, cesarian section |
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| caesarian | (noun) the delivery of a fetus by surgical incision through the abdominal wall and uterus (from the belief that Julius Caesar was born that way) | Synonyms: abdominal delivery, C-section, caesarean, caesarean delivery, caesarean section, caesarian delivery, caesarian section, cesarean, cesarean delivery, cesarean section, cesarian, cesarian section |
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| caesium | (noun) a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal | Synonyms: atomic number 55, cesium, Cs |
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| caesura | (noun) a break or pause (usually for sense) in the middle of a verse line | - |
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| (noun) a pause or interruption (as in a conversation) | - |
| cafe | (noun) a small restaurant where drinks and snacks are sold | Synonyms: coffee bar, coffee shop, coffeehouse |
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| cafeteria | (noun) a restaurant where you serve yourself and pay a cashier | - |
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| caff | (noun) informal British term for a cafe | - |
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| caffein | (noun) a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects | Synonyms: caffeine |
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| caffeine | (noun) a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects | Synonyms: caffein |
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| caffeinism | (noun) poisoning resulting from excessive intake of caffeine containing products | Synonyms: caffeine intoxication |
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| caffer | (noun) an offensive and insulting term for any Black African | Synonyms: caffre, kaffir, kafir |
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| caffre | (noun) an offensive and insulting term for any Black African | Synonyms: caffer, kaffir, kafir |
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| caftan | (noun) a (cotton or silk) cloak with full sleeves and sash reaching down to the ankles; worn by men in the Levant | Synonyms: kaftan |
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| (noun) a woman's dress style that imitates the caftan cloaks worn by men in the Near East | Synonyms: kaftan |
| cage | (noun) an enclosure made or wire or metal bars in which birds or animals can be kept | Synonyms: coop |
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| (noun) the net that is the goal in ice hockey | - |
| (noun) a movable screen placed behind home base to catch balls during batting practice | Synonyms: batting cage |
| (noun) something that restricts freedom as a cage restricts movement | - |
| cager | (noun) an athlete who plays basketball | Synonyms: basketball player, basketeer |
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| cagoule | (noun) lightweight parka; waterproof | - |
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| cahoot | (noun) collusion | - |
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| caiman | (noun) a semiaquatic reptile of Central and South America that resembles an alligator but has a more heavily armored belly | Synonyms: cayman |
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| caimitillo | (noun) tropical American timber tree with dark hard heavy wood and small plumlike purple fruit | Synonyms: Chrysophyllum oliviforme, damson plum, satin leaf, satinleaf |
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| caimito | (noun) evergreen tree of West Indies and Central America having edible purple fruit star-shaped in cross section and dark green leaves with golden silky undersides | Synonyms: Chrysophyllum cainito, star apple |
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| cainogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: caenogenesis, cenogenesis, kainogenesis, kenogenesis |
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| caipiblack | (noun) a variation of the Caipirinha made with black vodka instead of cachaça. | - |
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| cairn | (noun) small rough-haired breed of terrier from Scotland | Synonyms: cairn terrier |
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| (noun) a mound of stones piled up as a memorial or to mark a boundary or path | - |
| cairngorm | (noun) a smoky yellow or brown quartz | Synonyms: smoky quartz |
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| caisson | (noun) large watertight chamber used for construction under water | Synonyms: cofferdam, pneumatic caisson |
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| (noun) an ornamental sunken panel in a ceiling or dome | Synonyms: coffer, lacunar |
| (noun) a chest to hold ammunition | Synonyms: ammunition chest |
| (noun) a two-wheeled military vehicle carrying artillery ammunition | - |
| caitiff | (noun) a cowardly and despicable person | - |
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| cajolery | (noun) flattery intended to persuade | Synonyms: blandishment, palaver |
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| cake | (noun) a block of solid substance (such as soap or wax) | Synonyms: bar |
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| (noun) baked goods made from or based on a mixture of flour, sugar, eggs, and fat | - |
| (noun) small flat mass of chopped or ground food | Synonyms: patty |
| cakehole | (noun) informal terms for the mouth | Synonyms: gob, hole, maw, trap, yap |
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| cakewalk | (noun) a strutting dance based on a march; was performed in minstrel shows; originated as a competition among Black dancers to win a cake | - |
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| (noun) an easy accomplishment | - |
| 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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| 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 | - |
| 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 |
| calcaneus | (noun) the largest tarsal bone; forms the human heel | Synonyms: heelbone, os tarsi fibulare |
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| calcedony | (noun) a milky or greyish translucent to transparent quartz | Synonyms: chalcedony |
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| calceolaria | (noun) any garden plant of the genus Calceolaria having flowers with large inflated slipper-shaped lower lip | Synonyms: slipperwort |
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| calceus | (noun) a shoe covering the ankle; worn by ancient Romans | - |
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| calciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: cholecalciferol, D, ergocalciferol, viosterol, vitamin D |
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| calcification | (noun) a process that impregnates something with calcium (or calcium salts) | - |
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| (noun) tissue hardened by deposition of lime salts | - |
| (noun) an inflexible and unchanging state | - |
| calcimine | (noun) a water-base paint containing zinc oxide and glue and coloring; used as a wash for walls and ceilings | - |
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| calcination | (noun) the conversion of metals into their oxides as a result of heating to a high temperature | - |
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| calcite | (noun) a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone | - |
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| calcitonin | (noun) thyroid hormone that tends to lower the level of calcium in the blood plasma and inhibit resorption of bone | Synonyms: thyrocalcitonin |
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| calcium | (noun) a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals | Synonyms: atomic number 20, Ca |
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| calculability | (noun) The quality of being subject to or ascertainable by calculation. | - |
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| calculation | (noun) the procedure of calculating; determining something by mathematical or logical methods | Synonyms: computation, computing |
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| (noun) problem solving that involves numbers or quantities | Synonyms: computation, figuring, reckoning |
| (noun) planning something carefully and intentionally | Synonyms: deliberation |
| calculator | (noun) a small machine that is used for mathematical calculations; can be mechanical or electronic | Synonyms: calculating machine |
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| (noun) an expert at calculation (or at operating calculating machines) | Synonyms: computer, estimator, figurer, reckoner |
| calculus | (noun) the branch of mathematics that is concerned with limits and with the differentiation and integration of functions | Synonyms: infinitesimal calculus |
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| (noun) a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body | Synonyms: concretion |
| (noun) an incrustation that forms on the teeth and gums | Synonyms: tartar, tophus |
| caldera | (noun) a large crater caused by the violent explosion of a volcano that collapses into a depression | - |
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| caldron | (noun) a very large pot that is used for boiling | Synonyms: cauldron |
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| calean | (noun) an oriental tobacco pipe with a long flexible tube connected to a container where the smoke is cooled by passing through water | Synonyms: chicha, hookah, hubble-bubble, hubbly-bubbly, kalian, narghile, nargileh, sheesha, shisha, water pipe |
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| caleche | (noun) the folding hood of a horse-drawn carriage | Synonyms: calash, calash top |
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| (noun) a woman's large folded hooped hood; worn in the 18th century | Synonyms: calash |
| calefaction | (noun) the property of being warming | Synonyms: incalescence |
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| calendar | (noun) a list or register of events (appointments or social events or court cases etc) | - |
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| (noun) a tabular array of the days (usually for one year) | - |
| (noun) a system of timekeeping that defines the beginning and length and divisions of the year | - |
| calender | (noun) a machine that smooths or glazes paper or cloth by pressing it between plates or passing it through rollers | - |
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| calendula | (noun) any of numerous chiefly annual herbs of the genus Calendula widely cultivated for their yellow or orange flowers; often used for medicinal and culinary purposes | - |
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| calf | (noun) young of domestic cattle | - |
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| (noun) young of various large placental mammals e.g. whale or giraffe or elephant or buffalo | - |
| (noun) the muscular back part of the shank | Synonyms: sura |
| (noun) fine leather from the skin of a calf | Synonyms: calfskin |
| calfskin | (noun) fine leather from the skin of a calf | Synonyms: calf |
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| caliber | (noun) a degree or grade of excellence or worth | Synonyms: calibre, quality |
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| (noun) diameter of a tube or gun barrel | Synonyms: bore, calibre, gauge |
| calibration | (noun) the act of checking or adjusting (by comparison with a standard) the accuracy of a measuring instrument | Synonyms: standardisation, standardization |
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