| acetaminophen | (noun) an analgesic for mild pain but not for inflammation; also used as an antipyretic; (Datril, Tylenol, Panadol, Phenaphen, Tempra, and Anacin III are trademarks of brands of acetaminophen tablets) | Synonyms: Anacin III, Datril, Panadol, Phenaphen, Tempra, Tylenol |
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| acetophenetidin | (noun) a white crystalline compound used as an analgesic and also as an antipyretic | Synonyms: acetphenetidin, phenacetin |
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| acetphenetidin | (noun) a white crystalline compound used as an analgesic and also as an antipyretic | Synonyms: acetophenetidin, phenacetin |
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| chloramphenicol | (noun) an oral antibiotic (trade name Chloromycetin) used to treat serious infections (especially typhoid fever) | Synonyms: Chloromycetin |
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| chloroacetophenone | (noun) a tear gas that is weaker than CS gas but lasts longer | Synonyms: CN gas |
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| clomiphene | (noun) a fertility drug (trade name Clomid) that is used to stimulate ovulation and that has been associated with multiple births | Synonyms: Clomid, clomiphene citrate |
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| dichlorodiphenyltrichloroethane | (noun) an insecticide that is also toxic to animals and humans; banned in the United States since 1972 | Synonyms: DDT |
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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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| diphenhydramine | (noun) antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness | Synonyms: Benadryl |
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| diphenylhydantoin | (noun) an anticonvulsant drug (trade name Dilantin) used to treat epilepsy and that is not a sedative | Synonyms: Dilantin, phenytoin |
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| epiphenomenon | (noun) a secondary phenomenon that is a by-product of another phenomenon | - |
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| fluphenazine | (noun) tranquilizer used to treat psychotic disorders | - |
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| hexachlorophene | (noun) antibacterial substance that is a water-soluble powder used in antiseptic soaps and toothpaste | - |
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| hyphen | (noun) a punctuation mark (-) used between parts of a compound word or between the syllables of a word when the word is divided at the end of a line of text | Synonyms: dash |
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| (verb) divide or connect with a hyphen | Synonyms: hyphenate |
| hyphenate | (verb) divide or connect with a hyphen | Synonyms: hyphen |
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| hyphenation | (noun) connecting syllables and words by hyphens | - |
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| (noun) division of a word especially at the end of a line on a page | Synonyms: word division |
| isophene | (noun) a line indicating biological events occurring with coincidence such as plants flowering. | - |
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| mephenytoin | (noun) a toxic anticonvulsant drug (trade name Mesantoin) used in the treatment of epilepsy when less toxic anticonvulsants have been ineffective | Synonyms: Mesantoin |
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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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| orphenadrine | (noun) a skeletal muscle relaxant (trade name Norflex) used to treat severe muscle strain and Parkinsonism | Synonyms: Norflex |
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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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| perphenazine | (noun) tranquilizer and antidepressant (trade name Triavil) sometimes used as an antiemetic for adults | Synonyms: Triavil |
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| phenacetin | (noun) a white crystalline compound used as an analgesic and also as an antipyretic | Synonyms: acetophenetidin, acetphenetidin |
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| phenacomys | (noun) any of several vole-like terrestrial or arboreal rodents of cold forested regions of Canada and western United States | - |
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| phenazopyridine | (noun) analgesic (trade name Pyridium) used to treat urinary tract infections | Synonyms: Pyridium |
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| phencyclidine | (noun) a drug used as an anesthetic by veterinarians; illicitly taken (originally in the form of powder or `dust') for its effects as a hallucinogen | Synonyms: angel dust, PCP, phencyclidine hydrochloride |
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| phenelzine | (noun) monoamine oxidase inhibitor (trade name Nardil) used to treat clinical depression | Synonyms: Nardil |
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| pheniramine | (noun) an antihistamine used in preparations to treat allergies and respiratory infections; used to treat rhinitis and skin rashes and pruritus | - |
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| phenobarbital | (noun) a long-acting barbiturate used as a sedative | Synonyms: Luminal, phenobarbitone, purple heart, sodium thiopental |
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| phenobarbitone | (noun) a long-acting barbiturate used as a sedative | Synonyms: Luminal, phenobarbital, purple heart, sodium thiopental |
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| phenol | (noun) any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups | - |
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| (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, oxybenzene, phenylic acid |
| phenolic | (noun) a thermosetting resin | Synonyms: phenolic resin, phenoplast |
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| phenolphthalein | (noun) a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8 | - |
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| phenomenal | (adjective) of or relating to a phenomenon | - |
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| (adjective) extraordinarily good or great; used especially as intensifiers | Synonyms: fantastic, grand, howling, marvellous, marvelous, rattling, terrific, tremendous, wonderful, wondrous |
| phenomenality | (noun) The state or property of being very remarkable; highly extraordinary; amazing. | - |
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| phenomenally | (adverb) to a phenomenal degree | - |
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| phenomenology | (noun) a philosophical doctrine proposed by Edmund Husserl based on the study of human experience in which considerations of objective reality are not taken into account | - |
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| phenomenon | (noun) any state or process known through the senses rather than by intuition or reasoning | - |
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| (noun) a remarkable development | - |
| phenoplast | (noun) a thermosetting resin | Synonyms: phenolic, phenolic resin |
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| phenothiazine | (noun) a compound used primarily in veterinary medicine to rid farm animals of internal parasites | Synonyms: thiodiphenylamine |
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| phenotype | (noun) what an organism looks like as a consequence of the interaction of its genotype and the environment | - |
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| phenotypic | (adjective) of or relating to or constituting a phenotype | Synonyms: phenotypical |
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| phenotypical | (adjective) of or relating to or constituting a phenotype | Synonyms: phenotypic |
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| phensuximide | (noun) anticonvulsant (trade name Milontin) used to treat petit mal | Synonyms: Milontin |
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| phentolamine | (noun) a virility drug (trade name Vasomax) to treat erectile dysfunction in men | Synonyms: Vasomax |
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| phenylacetamide | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilid, acetanilide |
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| phenylalanine | (noun) an essential amino acid found in proteins and needed for growth of children and for protein metabolism in children and adults; abundant in milk and eggs; it is normally converted to tyrosine in the human body | - |
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| phenylamine | (noun) oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines | Synonyms: aminobenzine, aniline, aniline oil |
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| phenylbutazone | (noun) anti-inflammatory drug (trade name Butazolidin) | Synonyms: Butazolidin |
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| phenylephrine | (noun) a powerful vasoconstrictor used to dilate the pupils and relieve nasal congestion | - |
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| phenylethylene | (noun) a colorless oily liquid; the monomer for polystyrene | Synonyms: cinnamene, styrene, vinylbenzene |
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| phenylketonuria | (noun) a genetic disorder of metabolism; lack of the enzyme needed to turn phenylalanine into tyrosine results in an accumulation of phenylalanine in the body fluids which causes various degrees of mental deficiency | Synonyms: PKU |
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| phenylpropanolamine | (noun) an adrenergic drug used in many preparations to relieve allergic reactions or respiratory infections | - |
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| phenyltoloxamine | (noun) antihistamine included in some preparations used to treat coughing and nasal congestion | - |
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| phenytoin | (noun) an anticonvulsant drug (trade name Dilantin) used to treat epilepsy and that is not a sedative | Synonyms: Dilantin, diphenylhydantoin |
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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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| sphenion | (noun) the anterior tip of the parietal bone | - |
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| sphenoid | (noun) butterfly-shaped bone at the base of the skull | Synonyms: os sphenoidale, sphenoid bone |
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| swamphen | (noun) any of various small aquatic birds of the genus Gallinula distinguished from rails by a frontal shield and a resemblance to domestic hens | Synonyms: gallinule, marsh hen, water hen |
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| thiodiphenylamine | (noun) a compound used primarily in veterinary medicine to rid farm animals of internal parasites | Synonyms: phenothiazine |
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