| boxwood | (noun) evergreen shrubs or small trees | Synonyms: box |
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| (noun) very hard tough close-grained light yellow wood of the box (particularly the common box); used in delicate woodwork: musical instruments and inlays and engraving blocks | Synonyms: Turkish boxwood |
| breadbox | (noun) a container used to keep bread or cake in | Synonyms: bread-bin |
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| breakax | (noun) West Indian timber tree having very hard wood | Synonyms: break-axe, breakaxe, Sloanea jamaicensis |
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| breakaxe | (noun) West Indian timber tree having very hard wood | Synonyms: break-axe, breakax, Sloanea jamaicensis |
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| broadax | (noun) a large ax with a broad cutting blade | Synonyms: broadaxe |
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| broadaxe | (noun) a large ax with a broad cutting blade | Synonyms: broadax |
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| bruxism | (noun) involuntarily or unconsciously clenching or grinding the teeth, typically during sleep | - |
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| bulimarexia | (noun) a disorder of eating in which the person alternates between strong craving for food and aversion to food; characterized by excessive eating followed by periods of fasting or self-induced vomiting | Synonyms: binge-purge syndrome, binge-vomit syndrome, bulimia nervosa |
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| buxomness | (noun) the bodily property of being attractively plump and vigorous and (of women) full-bosomed | - |
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| cachexia | (noun) any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease | Synonyms: cachexy, wasting |
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| cachexy | (noun) any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease | Synonyms: cachexia, wasting |
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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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| calx | (noun) a white crystalline oxide used in the production of calcium hydroxide | Synonyms: burnt lime, calcined lime, calcium oxide, fluxing lime, lime, quicklime, unslaked lime |
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| calyx | (noun) (botany) the whorl of sepals of a flower collectively forming the outer floral envelope or layer of the perianth enclosing and supporting the developing bud; usually green | - |
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| camelpox | (noun) a viral disease of camels closely related to smallpox | - |
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| carboxyl | (noun) the univalent radical -COOH; present in and characteristic of organic acids | Synonyms: carboxyl group |
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| cashbox | (noun) a strongbox for holding cash | Synonyms: money box, till |
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| catalexis | (noun) the absence of a syllable in the last foot of a line or verse | - |
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| cathexis | (noun) (psychoanalysis) the libidinal energy invested in some idea or person or object | Synonyms: charge |
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| caudex | (noun) woody stem of palms and tree ferns | - |
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| (noun) persistent thickened stem of a herbaceous perennial plant | Synonyms: stock |
| cefadroxil | (noun) a cephalosporin antibiotic (trade name Ultracef) | Synonyms: Ultracef |
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| cefotaxime | (noun) a parenteral cephalosporin (trade name Claforan) used for severe infections of the lungs or throat or ears or urinary tract | Synonyms: Claforan |
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| ceftriaxone | (noun) a parenteral cephalosporin (trade name Rocephin) used for severe infection of the lungs or throat or ears or urinary tract | Synonyms: Rocephin |
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| cefuroxime | (noun) a cephalosporin that can be given parenterally (trade name Zinacef) or orally by tablets (trade name Ceftin); indicated for infections of the lungs or throat or ears or urinary tract or meninges | Synonyms: Ceftin, Zinacef |
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| celecoxib | (noun) a Cox-2 inhibitor (trade name Celebrex) that relieves pain and inflammation without harming the digestive tract | Synonyms: Celebrex |
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| centrex | (noun) (CENTRal EXchange) a kind of telephone exchange | - |
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| cephalexin | (noun) a cephalosporin antibiotic (trade names Keflex and Keflin and Keftab) commonly prescribed for mild to moderately severe infections of the skin or ears or throat or lungs or urinary tract | Synonyms: Keflex, Keflin, Keftab |
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| cervix | (noun) the part of an organism (human or animal) that connects the head to the rest of the body | Synonyms: neck |
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| (noun) necklike opening to the uterus | Synonyms: cervix uteri, uterine cervix |
| chatterbox | (noun) an obnoxious and foolish and loquacious talker | Synonyms: babbler, chatterer, magpie, prater, spouter |
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| (noun) orchid growing along streams or ponds of western North America having leafy stems and 1 greenish-brown and pinkish flower in the axil of each upper leaf | Synonyms: Epipactis gigantea, giant helleborine, stream orchid |
| chemotaxis | (noun) movement by a cell or organism in reaction to a chemical stimulus | - |
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| chickenpox | (noun) an acute contagious disease caused by herpes varicella zoster virus; causes a rash of vesicles on the face and body | Synonyms: varicella |
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| chlordiazepoxide | (noun) a tranquilizer (trade names Librium and Libritabs) used in the treatment of alcoholism | Synonyms: Libritabs, Librium |
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| chlorhexidine | (noun) a long-lasting liquid antiseptic; used by surgeons to wash their hands before performing surgery | - |
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| cicatrix | (noun) a mark left (usually on the skin) by the healing of injured tissue | Synonyms: cicatrice, scar |
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| ciprofloxacin | (noun) an oral antibiotic (trade name Cipro) used against serious bacterial infections of the skin or respiratory tract or urinary tract or bones or joints | Synonyms: Cipro |
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| circumflex | (noun) a diacritical mark (^) placed above a vowel in some languages to indicate a special phonetic quality | - |
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| claxon | (noun) a kind of loud horn formerly used on motor vehicles | Synonyms: klaxon |
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| climax | (noun) the moment of most intense pleasure in sexual intercourse | Synonyms: coming, orgasm, sexual climax |
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| (noun) the decisive moment in a novel or play | Synonyms: culmination |
| (noun) arrangement of clauses in ascending order of forcefulness | - |
| (noun) the highest point of anything conceived of as growing or developing or unfolding | Synonyms: flood tide |
| (noun) the most severe stage of a disease | - |
| coax | (noun) a transmission line for high-frequency signals | Synonyms: coax cable, coaxial cable |
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| coaxer | (noun) someone who tries to persuade by blandishment and coaxing | Synonyms: wheedler |
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| coaxing | (noun) flattery designed to gain favor | Synonyms: blarney, soft soap, sweet talk |
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| cocarboxylase | (noun) a coenzyme important in respiration in the Krebs cycle | Synonyms: thiamine pyrophosphate |
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| coccyx | (noun) the end of the vertebral column in humans and tailless apes | Synonyms: tail bone |
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| codex | (noun) an unbound manuscript of some ancient classic (as distinguished from a scroll) | Synonyms: leaf-book |
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| (noun) an official list of chemicals or medicines etc. | - |
| coexistence | (noun) existing peacefully together | - |
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| coextension | (noun) equality of extension or duration | - |
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| colpoxerosis | (noun) a condition in which the vagina is unusually dry | - |
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| commixture | (noun) the act of mixing together | Synonyms: admixture, intermixture, mix, mixing, mixture |
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| complex | (noun) a whole structure (as a building) made up of interconnected or related structures | Synonyms: building complex |
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| (noun) a conceptual whole made up of complicated and related parts | Synonyms: composite |
| (noun) (psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior | - |
| (noun) a compound described in terms of the central atom to which other atoms are bound or coordinated | Synonyms: coordination compound |
| complexifier | (noun) someone makes things complex | - |
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| complexion | (noun) the coloring of a person's face | Synonyms: skin color, skin colour |
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| (noun) (obsolete) a combination of elements (of dryness and warmth or of the four humors) that was once believed to determine a person's health and temperament | - |
| (noun) texture and appearance of the skin of the face | - |
| (noun) a point of view or general attitude or inclination | - |
| (noun) a combination that results from coupling or interlinking | - |
| complexity | (noun) the quality of being intricate and compounded | Synonyms: complexness |
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| complexness | (noun) the quality of being intricate and compounded | Synonyms: complexity |
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| conflux | (noun) a flowing together | Synonyms: confluence, merging |
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| connexion | (noun) the act of bringing two things into contact (especially for communication) | Synonyms: connection, joining |
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| (noun) shifting from one form of transportation to another | Synonyms: connection |
| (noun) an instrumentality that connects | Synonyms: connecter, connection, connective, connector |
| (noun) the process of bringing ideas or events together in memory or imagination | Synonyms: association, connection |
| (noun) a relation between things or events (as in the case of one causing the other or sharing features with it) | Synonyms: connectedness, connection |
| (noun) a connecting shape | Synonyms: connection, link |
| context | (noun) discourse that surrounds a language unit and helps to determine its interpretation | Synonyms: context of use, linguistic context |
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| (noun) the set of facts or circumstances that surround a situation or event | Synonyms: circumstance, setting |
| contextualism | (noun) any doctrine emphasizing the importance of the context in solving problems or establishing the meaning of terms | - |
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| convexity | (noun) the property possessed by a convex shape | Synonyms: convexness |
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| (noun) a shape that curves or bulges outward | Synonyms: convex shape |
| convexness | (noun) the property possessed by a convex shape | Synonyms: convexity |
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| cortex | (noun) the tissue forming the outer layer of an organ or structure in plant or animal | - |
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| (noun) the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum | Synonyms: cerebral cortex, cerebral mantle, pallium |
| (noun) the tissue that surrounds the lens nucleus | Synonyms: lens cortex |
| counterexample | (noun) refutation by example | - |
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| cowpox | (noun) a viral disease of cattle causing a mild skin disease affecting the udder; formerly used to inoculate humans against smallpox | Synonyms: vaccinia |
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| cox | (noun) the helmsman of a ship's boat or a racing crew | Synonyms: coxswain |
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| coxa | (noun) the ball-and-socket joint between the head of the femur and the acetabulum | Synonyms: articulatio coxae, hip, hip joint |
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| coxcomb | (noun) the fleshy red crest on the head of the domestic fowl and other gallinaceous birds | Synonyms: cockscomb, comb |
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| (noun) a cap worn by court jesters; adorned with a strip of red | Synonyms: cockscomb |
| (noun) a conceited dandy who is overly impressed by his own accomplishments | Synonyms: cockscomb |
| coxsackievirus | (noun) enterovirus causing a disease resembling poliomyelitis but without paralysis | Synonyms: Coxsackie virus |
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| coxswain | (noun) the helmsman of a ship's boat or a racing crew | Synonyms: cox |
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| crucifix | (noun) a gymnastic exercise performed on the rings when the gymnast supports himself with both arms extended horizontally | - |
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| (noun) representation of the cross on which Jesus died | Synonyms: rood-tree, rood |
| crucifixion | (noun) the act of executing by a method widespread in the ancient world; the victim's hands and feet are bound or nailed to a cross | - |
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| (noun) the infliction of extremely painful punishment or suffering | Synonyms: excruciation |
| crux | (noun) the most important point | Synonyms: crux of the matter |
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| cybersex | (noun) sexual arousal involving communication on the internet | - |
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| cyclohexanol | (noun) a colorless oily alcohol that smells like camphor | - |
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| cyclooxygenase | (noun) either of two related enzymes that control the production of prostaglandins and are blocked by aspirin | Synonyms: Cox |
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| cylix | (noun) a shallow drinking cup with two handles; used in ancient Greece | Synonyms: kylix |
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| cytotoxicity | (noun) the degree to which something is toxic to living cells | - |
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| cytotoxin | (noun) any substance that has a toxic effect on cells | - |
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| decarboxylase | (noun) any of the enzymes that hydrolize the carboxyl group | - |
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| decarboxylation | (noun) the process of removing a carboxyl group from a chemical compound (usually replacing it with hydrogen) | - |
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| deedbox | (noun) a strongly made box for holding money or valuables; can be locked | Synonyms: strongbox |
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| deflexion | (noun) a turning aside (of your course or attention or concern) | Synonyms: deflection, deviation, digression, divagation, diversion |
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| (noun) the property of being bent or deflected | Synonyms: bending, deflection |
| (noun) the amount by which a propagating wave is bent | Synonyms: deflection, refraction |
| (noun) the movement of the pointer or pen of a measuring instrument from its zero position | Synonyms: deflection |
| deixis | (noun) the function of pointing or specifying from the perspective of a participant in an act of speech or writing; aspects of a communication whose interpretation depends on knowledge of the context in which the communication occurs | - |
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| deoxyadenosine | (noun) a nucleoside component of DNA; composed of adenosine and deoxyribose | - |
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| deoxycytidine | (noun) a nucleoside component of DNA; composed of cytosine and deoxyribose | Synonyms: cytidine |
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| deoxyephedrine | (noun) an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant | Synonyms: chalk, chicken feed, crank, glass, ice, meth, methamphetamine, methamphetamine hydrochloride, Methedrine, shabu, trash |
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| deoxyguanosine | (noun) a nucleoside component of DNA; composed of guanine and deoxyribose | Synonyms: guanosine |
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| deoxynucleotide | (noun) Any nucleotide that contains a deoxy sugar. | - |
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| deoxyribose | (noun) a sugar that is a constituent of nucleic acids | - |
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| deoxythymidine | (noun) a nucleoside component of DNA; composed of thymine and deoxyribose | Synonyms: thymidine |
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| detox | (noun) the hospital ward or clinic in which patients are detoxified | - |
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| detoxification | (noun) treatment for poisoning by neutralizing the toxic properties (normally a function of the liver) | - |
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| (noun) a treatment for addiction to drugs or alcohol intended to remove the physiological effects of the addictive substances | - |
| dexamethasone | (noun) a corticosteroid drug (trade names Decadron or Dexamethasone Intensol or Dexone or Hexadrol or Oradexon) used to treat allergies or inflammation | Synonyms: Decadron, Dexamethasone Intensol, Dexone, Hexadrol, Oradexon |
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| dexterity | (noun) adroitness in using the hands | Synonyms: manual dexterity, sleight |
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| dextrality | (noun) preference for using the right hand | Synonyms: right-handedness |
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| dextrin | (noun) any of various polysaccharides obtained by hydrolysis of starch; a tasteless and odorless gummy substance that is used as a thickening agent and in adhesives and in dietary supplements | - |
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| dextrocardia | (noun) abnormal condition where the heart is located toward the right side of the chest | - |
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| dextroglucose | (noun) an isomer of glucose that is found in honey and sweet fruits | Synonyms: dextrose, grape sugar |
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| dextrorotation | (noun) rotation to the right | Synonyms: clockwise rotation |
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| dextrose | (noun) an isomer of glucose that is found in honey and sweet fruits | Synonyms: dextroglucose, grape sugar |
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| diazoxide | (noun) vasodilator (trade name Hyperstat) used to treat severe hypertension | Synonyms: Hyperstat |
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| dicloxacillin | (noun) antibacterial (trade name Dynapen) used to treat staphylococcal infections that are resistant to penicillin | Synonyms: Dynapen |
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