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| | | Methylene | n. [ F. méthylène, from Gr. &unr_; wine + &unr_; wood; -- a word coined to correspond to the name wood spirit. ] (Chem.) A divalent hydrocarbon radical, -CH2-, not known in the free state, but regarded as an essential residue and component of certain derivatives of methane; as, methylene bromide, CH2Br2; -- formerly called also methene. [ 1913 Webster ]
Methylene blue (Chem.), an artificial dyestuff consisting of a complex sulphur derivative of diphenyl amine; -- called also pure blue. [ 1913 Webster ]
| | methylenedioxymethamphetamine | n. a drug designed to have the effects of amphetamines but to avoid the drug laws, but now a controlled substance. Called also MDMA.
Syn. -- MDMA, Adam, ecstasy. [ WordNet 1.5 ] | | Oxymethylene | n. [ Oxy- (a) + methylene. ] (Chem.) Formic aldehyde, regarded as a methylene derivative. [ 1913 Webster ] | | Pentamethylene | n. [ Penta- + methylene. ] (Chem.) A hypothetical hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; -- so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene. [ 1913 Webster ] | | Tetramethylene | n. [ Tetra- + methylene. ] (Chem.) (a) A hypothetical hydrocarbon, C4H8, analogous to trimethylene, and regarded as the base of well-known series or derivatives. (b) Sometimes, an isomeric radical used to designate certain compounds which are really related to butylene. [ 1913 Webster ] | | Trimethylene | n. (Chem.) A gaseous hydrocarbon, C3H6, isomeric with propylene and obtained from it indirectly. It is the base of a series of compounds analogous to the aromatic hydrocarbons. [ 1913 Webster ] |
| | methylene blue | (n) a dark green dye used as a stain, an antiseptic, a chemical indicator, and an antidote in cyanide poisoning, Syn. methylthionine chloride | | methylene chloride | (n) a nonflammable liquid used as a solvent and paint remover and refrigerant, Syn. dichloromethane | | methylenedioxymethamphetamine | (n) 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, Syn. MDMA, Example: MDMA is often used at parties because it enables partygoers to remain active for long periods of time | | methylene group | (n) the bivalent radical CH2 derived from methane, Syn. methylene radical, methylene | | pentylenetetrazol | (n) a drug used as a circulatory and respiratory stimulant; larger doses cause convulsions in shock therapy; Metrazol is a trademark, Syn. Metrazol, pentamethylenetetrazol |
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