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Wordnet 3.0

NOUN (1)

1. the univalent radical CH3- derived from methane;
[syn: methyl, methyl group, methyl radical]


The Collaborative International Dictionary of English v.0.48:

Methyl \Meth"yl\, n. [See Methylene.] (Chem.) A univalent hydrocarbon radical, CH3-, not existing alone but regarded as an essential residue of methane, and appearing as a component part of many derivatives; as, methyl alcohol, methyl ether, methyl amine, etc. [Formerly written also methule, methyle, etc.] [1913 Webster] Methyl alcohol (Chem.), a light, volatile, inflammable liquid, CH3.OH, obtained by the distillation of wood, and hence called wood alcohol or wood spirit; tecnically referred to as methanol; -- called also methol, carbinol, etc. Methyl amine (Chem.), a colorless, inflammable, alkaline gas, CH3.NH2, having an ammoniacal, fishy odor. It is produced artificially, and also occurs naturally in herring brine and other fishy products. It is regarded as ammonia in which a third of its hydrogen is replaced by methyl, and is a type of the class of substituted ammonias. Methyl ether (Chem.), a light, volatile ether CH3.O.CH3, obtained by the etherification of methyl alcohol; -- called also methyl oxide or dimethyl ether. Methyl green. (Chem.) See under Green, n. Methyl orange. (Chem.) See Helianthin. Methyl violet (Chem.), an artificial dye, consisting of certain methyl halogen derivatives of rosaniline. [1913 Webster]
WordNet (r) 3.0 (2006):

methyl n 1: the univalent radical CH3- derived from methane [syn: methyl, methyl group, methyl radical]