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tetramethylene 四甲撐; 環丁烷 四甲撐; 環丁烷 Tetramethylene \Tet`ra*meth"yl*ene\, 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]
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