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2 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 pentamethylene
 戊撐; 環戊烷

From: Webster's Revised Unabridged Dictionary (1913)

 Pen·ta·meth·yl·ene n.  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.
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