| achylia | (noun) absence of gastric juices (partial or complete) | Synonyms: achylia gastrica |
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| aminophylline | (noun) a theophylline derivative that is used as a bronchodilator in the treatment of bronchial asthma, emphysema, and bronchitis | - |
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| anaphylaxis | (noun) hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance | - |
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| anchylosis | (noun) abnormal adhesion and rigidity of the bones of a joint | Synonyms: ankylosis |
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| anesthyl | (noun) a mixture of methyl and ethyl chloride; sprayed on as a local anesthetic | - |
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| anthophyllite | (noun) a dark brown mineral of the amphibole group; magnesium iron silicate | - |
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| bacteriochlorophyll | (noun) a substance in photosensitive bacteria that is related to but different from chlorophyll of higher plants | - |
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| cataphyll | (noun) a reduced or scarcely developed leaf at the start of a plant's life (i.e., cotyledons) or in the early stages of leaf development | - |
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| chlorophyl | (noun) any of a group of green pigments found in photosynthetic organisms; there are four naturally occurring forms | Synonyms: chlorophyll |
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| chlorophyll | (noun) any of a group of green pigments found in photosynthetic organisms; there are four naturally occurring forms | Synonyms: chlorophyl |
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| chyle | (noun) a milky fluid consisting of lymph and emulsified fats; formed in the small intestine during digestion of ingested fats | - |
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| chyloderma | (noun) swelling of the scrotum resulting from chronic lymphatic obstruction | Synonyms: elephantiasis scroti |
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| chylomicron | (noun) a microscopic particle of triglycerides produced in the intestines during digestion; in the bloodstream they release their fatty acids into the blood | - |
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| cladophyll | (noun) a flattened stem resembling and functioning as a leaf | Synonyms: cladode, phylloclad, phylloclade |
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| diethylmalonylurea | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, barbitone, diethylbarbituric acid, veronal |
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| diethylstilbesterol | (noun) synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy | Synonyms: DES, stilbesterol |
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| diethylstilbestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilboestrol, stilbestrol, stilboestrol |
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| diethylstilboestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilbestrol, stilbestrol, stilboestrol |
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| dimethylglyoxime | (noun) a compound used in analysis as a precipitant for palladium or nickel | - |
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| epiphyllum | (noun) any cactus of the genus Epiphyllum having flattened jointed irregularly branching stems and showy tubular flowers | Synonyms: orchid cactus |
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| ethyl | (noun) the univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atom | Synonyms: ethyl group, ethyl radical |
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| ethylene | (noun) a flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals; sometimes used as an anesthetic | Synonyms: ethene |
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| hydroxymethyl | (noun) a methyl with hydroxide replacing the hydrogen atoms | - |
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| megasporophyll | (noun) in non-flowering plants, a sporophyll that bears only megasporangia | - |
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| methyl | (noun) the univalent radical CH3- derived from methane | Synonyms: methyl group, methyl radical |
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| methylbenzene | (noun) a colorless flammable liquid obtained from petroleum or coal tar; used as a solvent for gums and lacquers and in high-octane fuels | Synonyms: toluene |
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| methyldopa | (noun) antihypertensive drug (trade name Aldomet) used in the treatment of high blood pressure | Synonyms: Aldomet, alpha methyl dopa |
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| methylene | (noun) the bivalent radical CH2 derived from methane | Synonyms: methylene group, methylene radical |
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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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| methylphenidate | (noun) central nervous system stimulant (trade name Ritalin) used in the treatment of narcolepsy in adults and attention deficit disorder in children | Synonyms: Ritalin |
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| methyltestosterone | (noun) an androgenic compound contained in drugs that are used to treat testosterone deficiency and female breast cancer and to stimulate growth and weight gain | - |
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| microsporophyll | (noun) in non-flowering plants, a sporophyll that bears only microsporangia | - |
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| pentamethylenetetrazol | (noun) a drug used as a circulatory and respiratory stimulant; larger doses cause convulsions in shock therapy; Metrazol is a trademark | Synonyms: Metrazol, pentylenetetrazol |
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| phenylethylene | (noun) a colorless oily liquid; the monomer for polystyrene | Synonyms: cinnamene, styrene, vinylbenzene |
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| phylactery | (noun) (Judaism) either of two small leather cases containing texts from the Hebrew Scriptures (known collectively as tefillin); traditionally worn (on the forehead and the left arm) by Jewish men during morning prayer | Synonyms: tefillin |
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| phyle | (noun) a tribe of ancient Athenians | - |
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| phyllo | (noun) tissue thin sheets of pastry used especially in Greek dishes | - |
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| phylloclad | (noun) a flattened stem resembling and functioning as a leaf | Synonyms: cladode, cladophyll, phylloclade |
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| phylloclade | (noun) a flattened stem resembling and functioning as a leaf | Synonyms: cladode, cladophyll, phylloclad |
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| phyllode | (noun) an expanded petiole taking on the function of a leaf blade | - |
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| phylloquinone | (noun) a form of vitamin K, based on 2-methyl-1,4-naphthoquinone, with a 3-phytyl substituent | Synonyms: phytonadione, vitamin K1 |
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| phylogenesis | (noun) (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms | Synonyms: evolution, organic evolution, phylogeny |
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| phylogeny | (noun) (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms | Synonyms: evolution, organic evolution, phylogenesis |
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| phylum | (noun) (biology) the major taxonomic group of animals and plants; contains classes | - |
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| (noun) (linguistics) a large group of languages that are historically related | - |
| polyethylene | (noun) a lightweight thermoplastic; used especially in packaging and insulation | Synonyms: polythene |
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| polytetrafluoroethylene | (noun) a material used to coat cooking utensils and in industrial applications where sticking is to be avoided | Synonyms: Teflon |
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| prophylactic | (noun) contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse | Synonyms: condom, rubber, safe, safety |
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| (noun) remedy that prevents or slows the course of an illness or disease | Synonyms: preventative, preventive |
| prophylaxis | (noun) the prevention of disease | - |
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| prophyll | (noun) a plant structure resembling a leaf | - |
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| pyrophyllite | (noun) a white or greenish aluminum silicate mineral (resembles talc) | - |
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| shylock | (noun) someone who lends money at excessive rates of interest | Synonyms: loan shark, moneylender, usurer |
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| spathiphyllum | (noun) any of various plants of the genus Spathiphyllum having a white or green spathe and a spike of fragrant flowers and often cultivated as an ornamental | Synonyms: peace lily, spathe flower |
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| sporophyl | (noun) leaf in ferns and mosses that bears the sporangia | Synonyms: sporophyll |
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| sporophyll | (noun) leaf in ferns and mosses that bears the sporangia | Synonyms: sporophyl |
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| staphylococci | (noun) spherical Gram-positive parasitic bacteria that tend to form irregular colonies; some cause boils or septicemia or infections | Synonyms: staph, staphylococcus |
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| staphylococcus | (noun) spherical Gram-positive parasitic bacteria that tend to form irregular colonies; some cause boils or septicemia or infections | Synonyms: staph, staphylococci |
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| subphylum | (noun) (biology) a taxonomic group ranking between a phylum and a class | - |
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| superphylum | (noun) (biology) a taxonomic group ranking between a phylum and below a class or subclass | - |
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| tachylite | (noun) a basic or basalt glass | - |
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| tetrachlorethylene | (noun) anthelmintic agent used against hookworm and other nematodes | Synonyms: carbon dichloride, ethylene tetrachloride, tetrachloroethylene |
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| tetrachloroethylene | (noun) anthelmintic agent used against hookworm and other nematodes | Synonyms: carbon dichloride, ethylene tetrachloride, tetrachlorethylene |
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| tetrafluoroethylene | (noun) a flammable gaseous fluorocarbon used in making plastics (polytetrafluoroethylene resins) | - |
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| tetramethyldiarsine | (noun) a poisonous oily liquid with a garlicky odor composed of 2 cacodyl groups; undergoes spontaneous combustion in dry air | Synonyms: cacodyl |
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| theophylline | (noun) a colorless crystalline alkaloid derived from tea leaves or made synthetically; used in medicine as a bronchial dilator | Synonyms: Elixophyllin, Slo-Bid, Theobid |
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| thylacine | (noun) rare doglike carnivorous marsupial of Tasmania having stripes on its back; probably extinct | Synonyms: Tasmanian tiger, Tasmanian wolf, Thylacinus cynocephalus |
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| trichloroethylene | (noun) a heavy colorless highly toxic liquid used as a solvent to clean electronic components and for dry cleaning and as a fumigant; causes cancer and liver and lung damage | Synonyms: TCE, trichloroethane |
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| xanthophyl | (noun) yellow carotenoid pigments in plants and animal fats and egg yolks | Synonyms: lutein, xanthophyll |
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| xanthophyll | (noun) yellow carotenoid pigments in plants and animal fats and egg yolks | Synonyms: lutein, xanthophyl |
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