Pentamethylene

Pen`ta*meth"yl*ene

(?), 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]

Pen*tan"dri*a

(?), n. pl. [NL., fr. Gr. (see Penta-) + , , man, male.] (Bot.) A Linnan class of plants having five separate stamens.
[1913 Webster]

{

Pen*tan"dri*an

(?),

Pen*tan"drous

(?), } a. (Bot.) Of or pertaining to the class Pentadria; having five stamens.
[1913 Webster]

 

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Thu 13th December 2018