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cleus of a large number of derivatives; -- so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene.

A hypothetical hydrocarbon, C4H8, analogous to trimethylene, and regarded as the base of well-known series or derivatives.

A tertiary amine analogous to trimethylamine.

em.) A prefix or combining form (also used adjectively) indicating the presence of three methyl groups.

haracteristic herringlike odor. It is regarded as a substituted ammonia containing three methyl groups.

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.

Methyl ketol; also, any of various homologues of the same.

Pure spirit of wine; pure or highly rectified spirit (called also ethyl alcohol); the spirituous or intoxicating element of fermented or distilled liquors, or more loosely a liquid containing it in considerable quantity. It is extracted by simple distillation from various vegetable juices and infusions of a saccharine…

nd other derivatives of the paraffin hydrocarbons, but also unsaturated compounds, as the ethylene and acetylene series.

One of a group of metameric hydrocarbons, C5H10, of the ethylene series. The colorless, volatile, mobile liquid commonly called amylene is a mixture of different members of the group.

Methyl phenyl ether, C6H5OCH3, got by distilling anisic acid or by the action of methide on potassium phenolate.

A solution of silver phosphate in an aqueous solution of ethylene diamine, used as an antiseptic astringent and as a disinfectant.

Any one of three metameric hydrocarbons, C4H8, of the ethylene series. They are gaseous or easily liquefiable.

A sirupy, nontoxic ptomaine, C5H14N2 (chemically pentamethylene diamine), formed in putrefaction of flesh, etc.

Methyl alcohol, CH3OH; -- also, by extension, any one in the homologous series of paraffine alcohols of which methyl alcohol is the type.

An oily hydrocarbon, C16H32, of the ethylene series, obtained from spermaceti.

H33, not yet isolated, but supposed to exist in a series of compounds homologous with the ethyl compounds, and derived from spermaceti.

crystalline solid, obtained from spermaceti, and regarded as homologous with ordinary, or ethyl, alcohol; ethal; - - called also cetyl alcohol.

O, of a pungent odor and harsh taste, obtained by the action of chlorine upon ordinary or ethyl alcohol.

ence of five, or the next to its highest; as, chloric acid, HClO3. Chloric ether (Chem.), ethylene dichloride. See Dutch liquid, under Dutch.