| apoplexy | (noun) a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain | Synonyms: cerebrovascular accident, CVA, stroke |
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| ataxy | (noun) inability to coordinate voluntary muscle movements; unsteady movements and staggering gait | Synonyms: ataxia, dyssynergia, motor ataxia |
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| boxy | (adjective) resembling a box in rectangularity | Synonyms: box-shaped, boxlike |
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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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| carboxyl | (adjective) relating to or containing the carboxyl group or carboxyl radical | Synonyms: carboxylic |
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| (noun) the univalent radical -COOH; present in and characteristic of organic acids | Synonyms: carboxyl group |
| carboxylate | (verb) treat (a chemical compound) with carboxyl or carboxylic acid | - |
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| carboxylic | (adjective) relating to or containing the carboxyl group or carboxyl radical | Synonyms: carboxyl |
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| cocarboxylase | (noun) a coenzyme important in respiration in the Krebs cycle | Synonyms: thiamine pyrophosphate |
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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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| decarboxylase | (noun) any of the enzymes that hydrolize the carboxyl group | - |
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| decarboxylate | (verb) lose a carboxyl group | - |
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| (verb) remove a carboxyl group from (a chemical compound) | - |
| decarboxylation | (noun) the process of removing a carboxyl group from a chemical compound (usually replacing it with hydrogen) | - |
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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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| deoxygenate | (verb) remove oxygen from (water) | - |
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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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| dicarboxylic | (adjective) containing two carboxyls per molecule | - |
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| dideoxycytosine | (noun) an antiviral drug used to combat HIV infection; a nucleoside analog reverse transcriptase inhibitor (NARTI) | Synonyms: ddC, DDC, zalcitabine |
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| dideoxyinosine | (noun) an antiviral drug used to combat HIV infection, a reverse transcriptase inhibitor | Synonyms: ddI, DDI, didanosine |
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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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| doxy | (noun) a woman who cohabits with an important man | Synonyms: concubine, courtesan, paramour |
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| doxycycline | (noun) an antibiotic derived from tetracycline that is effective against many infections | Synonyms: Vibramycin |
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| epitaxy | (noun) growing a crystal layer of one mineral on the crystal base of another mineral in such a manner that its crystalline orientation is the same as that of the substrate | - |
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| epixylon | (noun) organisms that are attached to submerged wood surfaces in aquatic ecosystems. | - |
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| epoxy | (noun) a thermosetting resin; used chiefly in strong adhesives and coatings and laminates | Synonyms: epoxy glue, epoxy resin |
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| (verb) glue with epoxy | - |
| ethoxyethane | (noun) a colorless volatile highly flammable liquid formerly used as an inhalation anesthetic | Synonyms: diethyl ether, divinyl ether, ether, ethyl ether, vinyl ether |
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| foxy | (adjective) marked by skill in deception | Synonyms: crafty, cunning, dodgy, guileful, knavish, slick, sly, tricksy, tricky, wily |
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| galaxy | (noun) (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust | Synonyms: extragalactic nebula |
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| (noun) a splendid assemblage (especially of famous people) | - |
| (noun) tufted evergreen perennial herb having spikes of tiny white flowers and glossy green round to heart-shaped leaves that become coppery to maroon or purplish in fall | Synonyms: beetleweed, coltsfoot, galax, Galax urceolata, wandflower |
| heterodoxy | (noun) the quality of being unorthodox | Synonyms: unorthodoxy |
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| (noun) any opinions or doctrines at variance with the official or orthodox position | Synonyms: heresy, unorthodoxy |
| heterotaxy | (noun) any abnormal position of the organs of the body | Synonyms: transposition |
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| hydroxy | (adjective) being or containing a hydroxyl group | - |
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| hydroxybenzene | (noun) a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally | Synonyms: carbolic acid, oxybenzene, phenol, phenylic acid |
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| hydroxychloroquine | (noun) anti-inflammatory drug (trade name Plaquenil) used in the treatment of rheumatoid arthritis and malaria and lupus erythematosus | Synonyms: Plaquenil |
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| hydroxyl | (noun) the monovalent group -OH in such compounds as bases and some acids and alcohols | Synonyms: hydroxyl group, hydroxyl radical |
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| hydroxymethyl | (noun) a methyl with hydroxide replacing the hydrogen atoms | - |
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| hydroxyproline | (noun) a crystalline amino acid obtained from gelatin or collagen | - |
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| hydroxytetracycline | (noun) a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections | Synonyms: oxytetracycline, oxytetracycline hydrochloride, Terramycin |
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| hydroxyzine | (noun) a drug (trade names Atarax and Vistaril) used as a tranquilizer to treat anxiety and motion sickness | Synonyms: Atarax, hydroxyzine hydrochloride, Vistaril |
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| iodochlorhydroxyquin | (noun) drug used to treat certain fungal infection (as athlete's foot) | Synonyms: Clioquinol |
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| mastopexy | (noun) plastic surgery to lift or reshape the breasts | - |
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| medroxyprogesterone | (noun) a progestin compound (trade name Provera) used to treat menstrual disorders | Synonyms: Provera |
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| methylenedioxymethamphetamine | (noun) a stimulant drug that is chemically related to mescaline and amphetamine and is used illicitly for its euphoric and hallucinogenic effects; it was formerly used in psychotherapy but in 1985 it was declared illegal in the United States | Synonyms: MDMA |
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| monocarboxylic | (adjective) containing one carboxyl group | - |
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| orchiopexy | (noun) operation to bring an undescended testicle into the scrotum | - |
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| orthodoxy | (noun) the quality of being orthodox (especially in religion) | - |
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| (noun) a belief or orientation agreeing with conventional standards | - |
| oxyacetylene | (noun) a mixture of oxygen and acetylene; used to create high temperatures for cutting or welding metals | - |
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| oxyacid | (noun) any acid that contains oxygen | Synonyms: oxygen acid |
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| oxybenzene | (noun) a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally | Synonyms: carbolic acid, hydroxybenzene, phenol, phenylic acid |
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| oxycephaly | (noun) a congenital abnormality of the skull; the top of the skull assumes a cone shape | Synonyms: acrocephaly |
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| oxygen | (noun) a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust | Synonyms: atomic number 8, O |
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| oxygenase | (noun) an oxidoreductase that catalyzes the incorporation of molecular oxygen | - |
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| oxygenate | (verb) impregnate, combine, or supply with oxygen | Synonyms: aerate, oxygenise, oxygenize |
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| oxygenation | (noun) the process of providing or combining or treating with oxygen | - |
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| oxygenise | (verb) impregnate, combine, or supply with oxygen | Synonyms: aerate, oxygenate, oxygenize |
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| (verb) dehydrogenate with oxygen | Synonyms: oxygenize |
| (verb) change (a compound) by increasing the proportion of the electronegative part; or change (an element or ion) from a lower to a higher positive valence: remove one or more electrons from (an atom, ion, or molecule) | Synonyms: oxygenize |
| oxygenize | (verb) impregnate, combine, or supply with oxygen | Synonyms: aerate, oxygenate, oxygenise |
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| (verb) dehydrogenate with oxygen | Synonyms: oxygenise |
| (verb) change (a compound) by increasing the proportion of the electronegative part; or change (an element or ion) from a lower to a higher positive valence: remove one or more electrons from (an atom, ion, or molecule) | Synonyms: oxygenise |
| oxyhaemoglobin | (noun) the bright red hemoglobin that is a combination of hemoglobin and oxygen from the lungs | Synonyms: oxyhemoglobin |
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| oxyhemoglobin | (noun) the bright red hemoglobin that is a combination of hemoglobin and oxygen from the lungs | Synonyms: oxyhaemoglobin |
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| oxymoron | (noun) conjoining contradictory terms (as in `deafening silence') | - |
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| oxyopia | (noun) unusually acute vision | - |
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| oxyphenbutazone | (noun) an anti-inflammatory drug (trade name Tandearil) used to treat arthritis and bursitis | Synonyms: Tandearil |
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| oxyphencyclimine | (noun) an anticholinergic drug (trade name Daricon) used in treating peptic ulcers | Synonyms: Daricon |
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| oxytetracycline | (noun) a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections | Synonyms: hydroxytetracycline, oxytetracycline hydrochloride, Terramycin |
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| oxytocic | (noun) a drug that induces labor by stimulating contractions of the muscles of the uterus | Synonyms: oxytocic drug |
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| oxytocin | (noun) hormone secreted by the posterior pituitary gland (trade name Pitocin); stimulates contractions of the uterus and ejection of milk | Synonyms: Pitocin |
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| oxytone | (noun) word having stress or an acute accent on the last syllable | - |
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| paroxysm | (noun) a sudden uncontrollable attack | Synonyms: convulsion, fit |
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| paroxysmal | (adjective) accompanied by or of the nature of paroxysms | - |
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| paroxytone | (noun) word having stress or acute accent on the next to last syllable | - |
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| pixy | (noun) (folklore) fairies that are somewhat mischievous | Synonyms: brownie, elf, gremlin, hob, imp, pixie |
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| (noun) creeping evergreen shrub having narrow overlapping leaves and early white star-shaped flowers; of the pine barrens of New Jersey and the Carolinas | Synonyms: pixie, Pyxidanthera barbulata, pyxie |
| prexy | (noun) the head administrative officer of a college or university | Synonyms: president |
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| proparoxytone | (noun) word having stress or acute accent on the antepenult | - |
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| propoxyphene | (noun) a mildly narcotic analgesic drug (trade name Darvon) related to methadone but less addictive | Synonyms: Darvon, propoxyphene hydrochloride |
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| proxy | (noun) a power of attorney document given by shareholders of a corporation authorizing a specific vote on their behalf at a corporate meeting | - |
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| (noun) a person authorized to act for another | Synonyms: placeholder, procurator |
| pyroxylin | (noun) highly flammable nitrocellulose used in making collodion and plastics and lacquers | Synonyms: pyroxyline |
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| pyroxyline | (noun) highly flammable nitrocellulose used in making collodion and plastics and lacquers | Synonyms: pyroxylin |
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| sexy | (adjective) marked by or tending to arouse sexual desire or interest | - |
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| (adjective) stimulating sexual desire | Synonyms: aphrodisiac, aphrodisiacal |
| trihydroxy | (adjective) containing three hydroxyl groups | - |
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| unorthodoxy | (noun) the quality of being unorthodox | Synonyms: heterodoxy |
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| (noun) any opinions or doctrines at variance with the official or orthodox position | Synonyms: heresy, heterodoxy |
| (noun) a belief that rejects the orthodox tenets of a religion | Synonyms: heresy |
| unoxygenated | (adjective) (used of blood) not supplied with oxygen | Synonyms: unaerated |
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| unsexy | (adjective) not sexually aroused or arousing | - |
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| waxy | (adjective) easily impressed or influenced | Synonyms: impressible, impressionable |
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| (adjective) made of or covered with wax | Synonyms: waxen |
| (adjective) having the paleness of wax | Synonyms: waxen, waxlike |
| (adjective) capable of being bent or flexed or twisted without breaking | Synonyms: bendable, pliable, pliant |
| waxycap | (noun) any fungus of the family Hygrophoraceae having gills that are more or less waxy in appearance | - |
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| xylem | (noun) the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels | - |
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| xylene | (noun) a colorless flammable volatile liquid hydrocarbon used as a solvent | Synonyms: xylol |
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| xylol | (noun) a colorless flammable volatile liquid hydrocarbon used as a solvent | Synonyms: xylene |
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| xylometer | (noun) an instrument used to determine the specific gravity of wood | - |
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| xylophone | (noun) a percussion instrument with wooden bars tuned to produce a chromatic scale and with resonators; played with small mallets | Synonyms: marimba |
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| xylophonist | (noun) someone who plays a xylophone | - |
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| xylose | (noun) a sugar extracted from wood or straw; used in foods for diabetics | Synonyms: wood sugar |
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| xylosma | (noun) shrub or small tree grown as an ornamental in mild climates for its neat evergreen foliage and fragrant late flowers; native of China | Synonyms: Xylosma congestum |
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