| arthroscopy | (noun) a minimally invasive operation to repair a damaged joint; the surgeon examines the joint with an arthroscope while making repairs through a small incision | - |
|---|
| arthrospore | (noun) one of a string of thick walled vegetative resting cells formed by some algae and fungi | - |
|---|
| (noun) a body that resembles a spore but is not an endospore; produced by some bacteria | - |
| asbestos | (noun) a fibrous amphibole; used for making fireproof articles; inhaling fibers can cause asbestosis or lung cancer | - |
|---|
| asbestosis | (noun) lung disease caused by inhaling asbestos particles | - |
|---|
| ascospore | (noun) sexually produced fungal spore formed within an ascus | - |
|---|
| aspergillosis | (noun) an opportunistic infection by a fungus of the genus Aspergillus; characterized by inflammation and lesions of the ear and other organs | - |
|---|
| (noun) disease especially in agricultural workers caused by inhalation of Aspergillus spores causing lumps in skin and ears and respiratory organs | - |
| (noun) severe respiratory disease of birds that takes the form of an acute rapidly fatal pneumonia in young chickens and turkeys | Synonyms: brooder pneumonia |
| astereognosis | (noun) a loss of the ability to recognize objects by handling them | Synonyms: tactile agnosia |
|---|
| asthenosphere | (noun) the lower layer of the crust | - |
|---|
| ateleiosis | (noun) a form of infantilism characterized by physical underdevelopment but normal intelligence | Synonyms: ateliosis |
|---|
| ateliosis | (noun) a form of infantilism characterized by physical underdevelopment but normal intelligence | Synonyms: ateleiosis |
|---|
| atherosclerosis | (noun) a stage of arteriosclerosis involving fatty deposits (atheromas) inside the arterial walls, thus narrowing the arteries | Synonyms: coronary artery disease |
|---|
| athetosis | (noun) a continuous succession of slow, writhing, involuntary movements of the hands and feet and other body parts | - |
|---|
| atmosphere | (noun) a distinctive but intangible quality surrounding a person or thing | Synonyms: air, aura |
|---|
| (noun) the mass of air surrounding the Earth | Synonyms: air |
| (noun) the envelope of gases surrounding any celestial body | - |
| (noun) a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade | Synonyms: atm, standard atmosphere, standard pressure |
| (noun) the weather or climate at some place | Synonyms: atmospheric state |
| (noun) a particular environment or surrounding influence | Synonyms: ambiance, ambience |
| atmospherics | (noun) a crackling or hissing noise caused by electrical interference | Synonyms: atmospheric static, static |
|---|
| atopognosia | (noun) absence or loss of topognosia; inability to locate correctly a point of touch | Synonyms: atopognosis |
|---|
| atopognosis | (noun) absence or loss of topognosia; inability to locate correctly a point of touch | Synonyms: atopognosia |
|---|
| attosecond | (noun) one quintillionth (10^-18) of a second; one thousandth of a femtosecond | - |
|---|
| auroscope | (noun) medical instrument consisting of a magnifying lens and light; used for examining the external ear (the auditory meatus and especially the tympanic membrane) | Synonyms: auriscope, otoscope |
|---|
| autosexing | (noun) (especially of domestic fowl) breeding to reveal differential sex characteristics at hatching | - |
|---|
| autosome | (noun) any chromosome that is not a sex chromosome; appear in pairs in body cells but as single chromosomes in spermatozoa | Synonyms: somatic chromosome |
|---|
| autostereotype | (noun) the standardized mental picture held in common by members of a cultural group depicting an oversimplified image of themselves and their behaviour. | - |
|---|
| autostrada | (noun) an expressway in an Italian-speaking country | - |
|---|
| autosuggestion | (noun) a system for self-improvement developed by Emile Coue which was popular in the 1920s and 1930s | Synonyms: auto-suggestion, self-suggestion |
|---|
| avitaminosis | (noun) any of several diseases caused by deficiency of one or more vitamins | Synonyms: hypovitaminosis |
|---|
| bacteriostasis | (noun) inhibition of the growth of bacteria | - |
|---|
| bacteriostat | (noun) a chemical or biological material that inhibits bacterial growth | - |
|---|
| bagascosis | (noun) alveolitis caused by inhaling bagasse (sugarcane dust) | Synonyms: bagassosis |
|---|
| bagassosis | (noun) alveolitis caused by inhaling bagasse (sugarcane dust) | Synonyms: bagascosis |
|---|
| balanoposthitis | (noun) inflammation of both the head of the penis and the foreskin | - |
|---|
| barosaur | (noun) a dinosaur that could grow to be as tall as a building five stories tall | Synonyms: barosaurus |
|---|
| barosaurus | (noun) a dinosaur that could grow to be as tall as a building five stories tall | Synonyms: barosaur |
|---|
| basidiospore | (noun) a sexually produced fungal spore borne on a basidium | - |
|---|
| bathos | (noun) triteness or triviality of style | - |
|---|
| (noun) a change from a serious subject to a disappointing one | Synonyms: anticlimax |
| (noun) insincere pathos | Synonyms: mawkishness |
| bedpost | (noun) any of 4 vertical supports at the corners of a bedstead | - |
|---|
| bellicoseness | (noun) a natural disposition to fight | Synonyms: bellicosity |
|---|
| bellicosity | (noun) a natural disposition to fight | Synonyms: bellicoseness |
|---|
| benthos | (noun) organisms (plants and animals) that live at or near the bottom of a sea, lake, river or stream | - |
|---|
| (noun) a region including the bottom of the sea and the littoral zones | Synonyms: benthic division, benthonic zone |
| bigos | (noun) a Polish stew of cabbage and meat | - |
|---|
| biosafety | (noun) safety from exposure to infectious agents | - |
|---|
| bioscience | (noun) any of the branches of natural science dealing with the structure and behavior of living organisms | Synonyms: life science |
|---|
| bioscope | (noun) a kind of early movie projector | - |
|---|
| (noun) a South African movie theater | - |
| biosphere | (noun) the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist | - |
|---|
| biostatistics | (noun) a branch of biology that studies biological phenomena and observations by means of statistical analysis | Synonyms: biometrics, biometry |
|---|
| biosynthesis | (noun) production of a chemical compound by a living organism | Synonyms: biogenesis |
|---|
| biosystematics | (noun) use of data (e.g. cytogenetic or biochemical) to assess taxonomic relations especially within an evolutionary framework | Synonyms: biosystematy |
|---|
| biosystematy | (noun) use of data (e.g. cytogenetic or biochemical) to assess taxonomic relations especially within an evolutionary framework | Synonyms: biosystematics |
|---|
| bladdernose | (noun) medium-sized blackish-grey seal with large inflatable sac on the head; of Arctic and northern Atlantic waters | Synonyms: Cystophora cristata, hooded seal |
|---|
| blastomycosis | (noun) any of several infections of the skin or mucous membrane caused by Blastomyces | - |
|---|
| blastosphere | (noun) early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs | Synonyms: blastula |
|---|
| blepharospasm | (noun) spasm of the eyelid muscle resulting in closure of the eye | - |
|---|
| blossom | (noun) reproductive organ of angiosperm plants especially one having showy or colorful parts | Synonyms: bloom, flower |
|---|
| (noun) the period of greatest prosperity or productivity | Synonyms: bloom, efflorescence, flower, flush, heyday, peak, prime |
| blossoming | (noun) the time and process of budding and unfolding of blossoms | Synonyms: anthesis, efflorescence, florescence, flowering, inflorescence |
|---|
| bluenose | (noun) a native or inhabitant of Nova Scotia | Synonyms: Nova Scotian |
|---|
| boost | (noun) the act of giving hope or support to someone | Synonyms: encouragement |
|---|
| (noun) the act of giving a push | - |
| (noun) an increase in cost | Synonyms: cost increase, hike, rise |
| booster | (noun) an additional dose that makes sure the first dose was effective | Synonyms: booster dose, booster shot, recall dose |
|---|
| (noun) the first stage of a multistage rocket | Synonyms: booster rocket, booster unit, takeoff booster, takeoff rocket |
| (noun) an amplifier for restoring the strength of a transmitted signal | Synonyms: booster amplifier, booster station, relay link, relay station, relay transmitter |
| (noun) a thief who steals goods that are in a store | Synonyms: lifter, shoplifter |
| (noun) someone who is an active supporter and advocate | Synonyms: plugger, promoter |
| (noun) a person who backs a politician or a team etc. | Synonyms: admirer, champion, friend, protagonist, supporter |
| boothose | (noun) protective stockings worn with or in place of boots | - |
|---|
| borosilicate | (noun) a salt of boric and silicic acids | - |
|---|
| bosc | (noun) greenish-yellow pear | - |
|---|
| bosh | (noun) pretentious or silly talk or writing | Synonyms: baloney, bilgewater, boloney, drool, humbug, taradiddle, tarradiddle, tommyrot, tosh, twaddle |
|---|
| bosie | (noun) a cricket ball bowled as if to break one way that actually breaks in the opposite way | Synonyms: bosie ball, googly, wrong 'un |
|---|
| bosk | (noun) a small wooded area | - |
|---|
| bosom | (noun) a close affectionate and protective acceptance | Synonyms: embrace |
|---|
| (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 | - |
| boson | (noun) any particle that obeys Bose-Einstein statistics but not the Pauli exclusion principle; all nuclei with an even mass number are bosons | - |
|---|
| boss | (noun) a circular rounded projection or protuberance | Synonyms: knob |
|---|
| (noun) a person responsible for hiring workers | Synonyms: hirer |
| (noun) a person who exercises control over workers | Synonyms: chief, foreman, gaffer, honcho |
| (noun) a leader in a political party who controls votes and dictates appointments | Synonyms: party boss, political boss |
| (noun) a person who exercises control and makes decisions | - |
| bossism | (noun) domination of a political organization by a party boss | - |
|---|
| bosun | (noun) a petty officer on a merchant ship who controls the work of other seamen | Synonyms: bo's'n, bo'sun, boatswain, bos'n |
|---|
| bottlenose | (noun) northern Atlantic beaked whale with a bulbous forehead | Synonyms: bottle-nosed whale, bottlenose whale, Hyperoodon ampullatus |
|---|
| (noun) any of several dolphins with rounded forehead and well-developed beak; chiefly of northern Atlantic and Mediterranean | Synonyms: bottle-nosed dolphin, bottlenose dolphin |
| bromeosin | (noun) a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures | Synonyms: eosin |
|---|
| bronchoscope | (noun) a slender tubular instrument used to examine the bronchial tubes | - |
|---|
| bronchospasm | (noun) a spasm of the bronchi that makes exhalation difficult and noisy; associated with asthma and bronchitis | - |
|---|
| brontosaur | (noun) huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic | Synonyms: apatosaur, apatosaurus, Apatosaurus excelsus, brontosaurus, thunder lizard |
|---|
| brontosaurus | (noun) huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic | Synonyms: apatosaur, apatosaurus, Apatosaurus excelsus, brontosaur, thunder lizard |
|---|
| brucellosis | (noun) an infectious disease of domestic animals often resulting in spontaneous abortion; transmittable to human beings | Synonyms: Bang's disease, contagious abortion |
|---|
| (noun) infectious bacterial disease of human beings transmitted by contact with infected animals or infected meat or milk products; characterized by fever and headache | Synonyms: Gibraltar fever, Malta fever, Mediterranean fever, Rock fever, undulant fever |
| bugloss | (noun) perennial or biennial herb cultivated for its delicate usually blue flowers | Synonyms: alkanet, Anchusa officinalis |
|---|
| (noun) widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States | Synonyms: bitterweed, bristly oxtongue, oxtongue, Picris echioides |
| bullnose | (noun) a small carpenter's plane with the cutting edge near the front | Synonyms: bullnosed plane |
|---|
| burnoose | (noun) a long hooded cloak woven of wool in one piece; worn by Arabs and Moors | Synonyms: burnous, burnouse |
|---|
| caboose | (noun) a car on a freight train for use of the train crew; usually the last car on the train | Synonyms: cabin car |
|---|
| (noun) the area for food preparation on a ship | Synonyms: cookhouse, galley, ship's galley |
| callosectomy | (noun) severing the corpus callosum so that communication between the cerebral hemispheres is interrupted (in cases of severe intractable epilepsy) | Synonyms: callosotomy |
|---|
| callosity | (noun) devoid of passion or feeling; hardheartedness | Synonyms: callousness, hardness, insensibility, unfeelingness |
|---|
| (noun) an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot) | Synonyms: callus |
| callosotomy | (noun) severing the corpus callosum so that communication between the cerebral hemispheres is interrupted (in cases of severe intractable epilepsy) | Synonyms: callosectomy |
|---|
| calosoma | (noun) any beetle of the genus Calosoma | - |
|---|
| camosh | (noun) any of several plants of the genus Camassia; North and South America | Synonyms: camas, camash, camass, quamash |
|---|
| candyfloss | (noun) a candy made by spinning sugar that has been boiled to a high temperature | Synonyms: cotton candy, spun sugar |
|---|
| carcinosarcoma | (noun) a malignant neoplasm composed of carcinoma and sarcoma extensively intermixed | - |
|---|
| 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 | - |
|---|
| carnosaur | (noun) large carnivorous bipedal dinosaur having huge claws | - |
|---|
| carpospore | (noun) a nonmotile spore of red algae | - |
|---|
| catabiosis | (noun) normal aging of cells | - |
|---|
| catostomid | (noun) a cypriniform fish of the family Catostomidae | - |
|---|
| celioscopy | (noun) endoscopic examination of the abdomen through the abdominal wall | - |
|---|
| cellulose | (noun) a polysaccharide that is the chief constituent of all plant tissues and fibers | - |
|---|
| cellulosic | (noun) a plastic made from cellulose (or a derivative of cellulose) | - |
|---|
| centrosome | (noun) small region of cytoplasm adjacent to the nucleus; contains the centrioles and serves to organize the microtubules | Synonyms: central body |
|---|
| cephalosporin | (noun) one of several broad spectrum antibiotic substances obtained from fungi and related to penicillin (trade names Mefoxin); addition of side chains has produced semisynthetic antibiotics with greater antibacterial activity | Synonyms: Mefoxin |
|---|
| ceratosaur | (noun) primitive medium-sized theropod; swift-running bipedal carnivorous dinosaur having grasping hands with sharp claws and a short horn between the nostrils; Jurassic in North America | Synonyms: ceratosaurus |
|---|
| ceratosaurus | (noun) primitive medium-sized theropod; swift-running bipedal carnivorous dinosaur having grasping hands with sharp claws and a short horn between the nostrils; Jurassic in North America | Synonyms: ceratosaur |
|---|
| cerebroside | (noun) A cerebroside is any of various organic lipid compounds containing glucose or galactose and glucose; it occurs in the myelin sheath of cerebrospinal neurons. | - |
|---|
| chamosite | (noun) a greenish grey or black silicate of iron and aluminum | - |
|---|
| chaos | (noun) (physics) a dynamical system that is extremely sensitive to its initial conditions | - |
|---|
| (noun) the formless and disordered state of matter before the creation of the cosmos | - |
| (noun) a state of extreme confusion and disorder | Synonyms: bedlam, pandemonium, topsy-turvydom, topsy-turvyness |
| cheiloschisis | (noun) a congenital cleft in the middle of the upper lip | Synonyms: cleft lip, harelip |
|---|