| bigram | (noun) a word that is written with two letters in an alphabetic writing system | - |
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| bilateralism | (noun) the property of being symmetrical about a vertical plane | Synonyms: bilateral symmetry, bilaterality |
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| bilingualism | (noun) the ability to speak two languages colloquially | - |
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| bimetallism | (noun) a monetary standard under which the basic unit of currency is defined by stated amounts of two metals (usually gold and silver) with values set at a predetermined ratio | - |
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| bimillennium | (noun) a span of 2000 years | Synonyms: bimillenary |
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| (noun) the 2000th anniversary (or the celebration of it) | Synonyms: bimillenary |
| bioarm | (noun) any weapon usable in biological warfare | Synonyms: biological weapon, bioweapon |
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| biographism | (noun) reduction of textual meaning to authorial biography. | - |
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| biologism | (noun) use of biological principles in explaining human especially social behavior | - |
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| bioterrorism | (noun) terrorism using the weapons of biological warfare | Synonyms: biological terrorism |
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| bipedalism | (noun) the bodily attribute of being bipedal; having two feet | - |
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| biprism | (noun) an optical device for obtaining interference fringes | - |
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| blastoderm | (noun) a layer of cells on the inside of the blastula | Synonyms: blastodisc, germinal area, germinal disc |
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| blepharism | (noun) condition in which a person blinks continuously | - |
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| blepharospasm | (noun) spasm of the eyelid muscle resulting in closure of the eye | - |
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| blindworm | (noun) small burrowing legless European lizard with tiny eyes; popularly believed to be blind | Synonyms: Anguis fragilis, slowworm |
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| (noun) any of the small slender limbless burrowing wormlike amphibians of the order Gymnophiona; inhabit moist soil in tropical regions | Synonyms: caecilian |
| bloodstream | (noun) the blood flowing through the circulatory system | Synonyms: blood stream |
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| bloodworm | (noun) a segmented marine worm with bright red body; often used for bait | - |
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| bloom | (noun) a powdery deposit on a surface | Synonyms: efflorescence |
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| (noun) reproductive organ of angiosperm plants especially one having showy or colorful parts | Synonyms: blossom, flower |
| (noun) the organic process of bearing flowers | Synonyms: blooming |
| (noun) a rosy color (especially in the cheeks) taken as a sign of good health | Synonyms: blush, flush, rosiness |
| (noun) the best time of youth | Synonyms: bloom of youth, salad days |
| (noun) the period of greatest prosperity or productivity | Synonyms: blossom, efflorescence, flower, flush, heyday, peak, prime |
| blossom | (noun) reproductive organ of angiosperm plants especially one having showy or colorful parts | Synonyms: bloom, flower |
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| (noun) the period of greatest prosperity or productivity | Synonyms: bloom, efflorescence, flower, flush, heyday, peak, prime |
| bluestem | (noun) tall grass with smooth bluish leaf sheaths grown for hay in the United States | Synonyms: Andropogon furcatus, Andropogon gerardii, blue stem |
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| bm | (noun) a euphemism for defecation | Synonyms: bowel movement, movement |
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| boardroom | (noun) a room where a committee meets (such as the board of directors of a company) | Synonyms: council chamber |
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| bohemianism | (noun) conduct characteristic of a bohemian | - |
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| bohrium | (noun) a transuranic element with atomic number 107 | Synonyms: atomic number 107, Bh, element 107 |
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| bollworm | (noun) any of various moth caterpillars that destroy cotton bolls | - |
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| bologram | (noun) record or recording made by a bolometer | Synonyms: bolograph |
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| bookworm | (noun) someone who spends a great deal of time reading | - |
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| (noun) a person who pays more attention to formal rules and book learning than they merit | Synonyms: pedant, scholastic |
| boom | (noun) any of various more-or-less horizontal spars or poles used to extend the foot of a sail or for handling cargo or in mooring | - |
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| (noun) a pole carrying an overhead microphone projected over a film or tv set | Synonyms: microphone boom |
| (noun) a deep prolonged loud noise | Synonyms: roar, roaring, thunder |
| (noun) a sudden happening that brings good fortune (as a sudden opportunity to make money) | Synonyms: bonanza, bunce, godsend, gold rush, gravy, manna from heaven, windfall |
| (noun) a state of economic prosperity | - |
| boredom | (noun) the feeling of being bored by something tedious | Synonyms: ennui, tedium |
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| bosom | (noun) a close affectionate and protective acceptance | Synonyms: embrace |
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| (noun) cloth that covers the chest or breasts | - |
| (noun) either of two soft fleshy milk-secreting glandular organs on the chest of a woman | Synonyms: boob, breast, knocker, tit, titty |
| (noun) a person's breast or chest | - |
| (noun) the locus of feelings and intuitions | Synonyms: heart |
| (noun) the chest considered as the place where secret thoughts are kept | - |
| bossism | (noun) domination of a political organization by a party boss | - |
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| bottom | (noun) a cargo ship | Synonyms: freighter, merchant ship, merchantman |
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| (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, backside, behind, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
| (noun) the lower side of anything | Synonyms: underside, undersurface |
| (noun) the lowest part of anything | - |
| (noun) a depression forming the ground under a body of water | Synonyms: bed |
| (noun) low-lying alluvial land near a river | Synonyms: bottomland |
| (noun) the second half of an inning; while the home team is at bat | Synonyms: bottom of the inning |
| botulinum | (noun) anaerobic bacterium producing botulin the toxin that causes botulism | Synonyms: botulinus, Clostridium botulinum |
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| botulism | (noun) food poisoning from ingesting botulin; not infectious; affects the CNS; can be fatal if not treated promptly | - |
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| bpm | (noun) the pace of music measured by the number of beats occurring in 60 seconds | Synonyms: beats per minute, M.M., metronome marking |
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| brachium | (noun) (biology) a branching or armlike part of an animal | - |
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| brachycephalism | (noun) the quality of being brachycephalic | Synonyms: brachycephaly |
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| brainstem | (noun) the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamus | Synonyms: brain-stem, brain stem |
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| brainstorm | (noun) the clear (and often sudden) understanding of a complex situation | Synonyms: brainwave, insight |
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| bream | (noun) any of various usually edible freshwater percoid fishes having compressed bodies and shiny scales; especially (but not exclusively) of the genus Lepomis | Synonyms: freshwater bream |
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| (noun) any of numerous marine percoid fishes especially (but not exclusively) of the family Sparidae | Synonyms: sea bream |
| (noun) flesh of any of various saltwater fishes of the family Sparidae or the family Bramidae | Synonyms: sea bream |
| (noun) flesh of various freshwater fishes of North America or of Europe | Synonyms: freshwater bream |
| bridegroom | (noun) a man who has recently been married | Synonyms: groom |
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| (noun) a man participant in his own marriage ceremony | Synonyms: groom |
| brim | (noun) a circular projection that sticks outward from the crown of a hat | - |
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| (noun) the top edge of a vessel or other container | Synonyms: lip, rim |
| broadloom | (noun) a carpet woven on a wide loom to obviate the need for seams | - |
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| bromoform | (noun) colorless liquid haloform CHBr3 | Synonyms: tribromomethane |
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| bronchospasm | (noun) a spasm of the bronchi that makes exhalation difficult and noisy; associated with asthma and bronchitis | - |
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| broom | (noun) a cleaning implement for sweeping; bundle of straws or twigs attached to a long handle | - |
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| (noun) any of various shrubs of the genera Cytisus or Genista or Spartium having long slender branches and racemes of yellow flowers | - |
| (noun) common Old World heath represented by many varieties; low evergreen grown widely in the Northern Hemisphere | Synonyms: Calluna vulgaris, heather, ling, Scots heather |
| brougham | (noun) a sedan that has no roof over the driver's seat | - |
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| (noun) light carriage; pulled by a single horse | - |
| bruitism | (noun) The use in music of sounds taken from an extra-musical source or context. The term is used most often of percussion or of electronic music that suggests the sounds of machinery. | - |
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| bruxism | (noun) involuntarily or unconsciously clenching or grinding the teeth, typically during sleep | - |
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| buckram | (noun) a coarse cotton fabric stiffened with glue; used in bookbinding and to stiffen clothing | - |
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| bum | (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, backside, behind, bottom, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
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| (noun) a vagrant | Synonyms: hobo, tramp |
| (noun) a person who is deemed to be despicable or contemptible | Synonyms: crumb, dirty dog, git, lowlife, puke, rat, rotter, scum bag, scumbag, skunk, so-and-so, stinker, stinkpot |
| (noun) person who does no work | Synonyms: do-nothing, idler, layabout, loafer |
| bunkum | (noun) unacceptable behavior (especially ludicrously false statements) | Synonyms: buncombe, bunk, guff, hogwash, rot |
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| bureaucratism | (noun) nonelective government officials | Synonyms: bureaucracy |
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| cabalism | (noun) adherence to some extreme traditional theological concept or interpretation | Synonyms: kabbalism |
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| cabbageworm | (noun) toxic green larva of a cabbage butterfly | Synonyms: Pieris rapae |
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| cablegram | (noun) a telegram sent abroad | Synonyms: cable, overseas telegram |
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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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| 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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| caecum | (noun) the cavity in which the large intestine begins and into which the ileum opens | Synonyms: blind gut, cecum |
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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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| caffeinism | (noun) poisoning resulting from excessive intake of caffeine containing products | Synonyms: caffeine intoxication |
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| cairngorm | (noun) a smoky yellow or brown quartz | Synonyms: smoky quartz |
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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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| 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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| californium | (noun) a radioactive transuranic element; discovered by bombarding curium with alpha particles | Synonyms: atomic number 98, Cf |
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| calm | (noun) steadiness of mind under stress | Synonyms: calmness, composure, equanimity |
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| (noun) wind moving at less than 1 knot; 0 on the Beaufort scale | Synonyms: calm air |
| cam | (noun) a rotating disk shaped to convert circular into linear motion | - |
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| cambium | (noun) the inner layer of the periosteum | - |
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| (noun) a formative one-cell layer of tissue between xylem and phloem in most vascular plants that is responsible for secondary growth | - |
| candelabrum | (noun) branched candlestick; ornamental; has several lights | Synonyms: candelabra |
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| cankerworm | (noun) green caterpillar of a geometrid moth; pest of various fruit and shade trees | - |
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| cannibalism | (noun) the practice of eating the flesh of your own kind | - |
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| capitalism | (noun) an economic system based on private ownership of capital | Synonyms: capitalist economy |
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| capitulum | (noun) a dense cluster of flowers or foliage | Synonyms: head |
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| (noun) fruiting spike of a cereal plant especially corn | Synonyms: ear, spike |
| (noun) an arrangement of leafy branches forming the top or head of a tree | - |
| capsicum | (noun) any of various tropical plants of the genus Capsicum bearing peppers | Synonyms: capsicum pepper plant, pepper |
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| carborundum | (noun) an abrasive composed of silicon carbide crystals | - |
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| cardamom | (noun) aromatic seeds used as seasoning like cinnamon and cloves especially in pickles and barbecue sauces | Synonyms: cardamon, cardamum |
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| (noun) rhizomatous herb of India having aromatic seeds used as seasoning | Synonyms: cardamon, Elettaria cardamomum |
| cardamum | (noun) aromatic seeds used as seasoning like cinnamon and cloves especially in pickles and barbecue sauces | Synonyms: cardamom, cardamon |
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| cardiogram | (noun) a graphical recording of the cardiac cycle produced by an electrocardiograph | Synonyms: ECG, EKG, electrocardiogram |
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| cardiospasm | (noun) a spasm of the cardiac sphincter (between the esophagus and the stomach); if the cardiac sphincter does not relax during swallowing the passage of food into the stomach is obstructed | - |
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| cardroom | (noun) a room for gambling on card games | - |
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| careerism | (noun) the practice of advancing your career at the expense of your personal integrity | - |
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| carom | (noun) a shot in billiards in which the cue ball contacts one object ball and then the other | Synonyms: cannon |
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| (noun) a glancing rebound | Synonyms: ricochet |
| caseworm | (noun) insect larva that constructs a protective case around its body | - |
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| catabolism | (noun) breakdown in living organisms of more complex substances into simpler ones together with release of energy | Synonyms: destructive metabolism, dissimilation, katabolism |
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| cataclysm | (noun) an event resulting in great loss and misfortune | Synonyms: calamity, catastrophe, disaster, tragedy |
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| (noun) a sudden violent change in the earth's surface | Synonyms: catastrophe |
| cataphatism | (noun) the religious belief that God has given enough clues to be known to humans positively and affirmatively (e.g., God created Adam `in his own image') | - |
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| cataplasm | (noun) a medical dressing consisting of a soft heated mass of meal or clay that is spread on a cloth and applied to the skin to treat inflamed areas or improve circulation etc. | Synonyms: plaster, poultice |
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| catechism | (noun) an elementary book summarizing the principles of a Christian religion; written as questions and answers | - |
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| (noun) a series of questions put to an individual (such as a political candidate) to elicit their views | - |
| categorem | (noun) a categorematic expression; a term capable of standing alone as the subject or predicate of a logical proposition | Synonyms: categoreme |
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| cavum | (noun) (anatomy) a natural hollow or sinus within the body | Synonyms: bodily cavity, cavity |
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| cecum | (noun) the cavity in which the large intestine begins and into which the ileum opens | Synonyms: blind gut, caecum |
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| celom | (noun) a cavity in the mesoderm of an embryo that gives rise in humans to the pleural cavity and pericardial cavity and peritoneal cavity | Synonyms: celoma, coelom |
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| cementum | (noun) a specialized bony substance covering the root of a tooth | Synonyms: cement |
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| centralism | (noun) the political policy of concentrating power in a central organization | - |
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| centrism | (noun) a political philosophy of avoiding the extremes of left and right by taking a moderate position or course of action | Synonyms: moderatism |
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| centrum | (noun) the main body of a vertebra | - |
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| cerebellum | (noun) a major division of the vertebrate brain; situated above the medulla oblongata and beneath the cerebrum in humans | - |
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| cerebrum | (noun) anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humans | - |
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| cerium | (noun) a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group | Synonyms: atomic number 58, Ce |
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| cesium | (noun) a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal | Synonyms: atomic number 55, caesium, Cs |
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