| propyl alcohol |
propanol: a clear colorless volatile liquid (alcohol) used as a solvent and antiseptic
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| propylene |
a flammable gas obtained by cracking petroleum; used in organic synthesis
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| proportional counter |
proportional counter tube: counter tube whose output pulse is proportional to number of ions produced
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| propoxyphene |
a mildly narcotic analgesic drug (trade name Darvon) related to methadone but less addictive
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| prophylactic |
contraceptive: capable of preventing conception or impregnation; "contraceptive devices and medications" preventive: remedy that prevents or slows the course of an illness or disease; "the doctor recommended several preventatives" cautionary: tending to ward off; "the swastika...a very ancient prophylactic symbol occurring among all peoples"- Victor Schultze condom: contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse preventive: preventing or contributing to the prevention of disease; "preventive medicine"; "vaccines are prophylactic"; "a prophylactic drug"
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