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pentamethylene

Pentamethylene is a 14 letter word which starts with the letter P and ends with the letter E for which we found 1 definitions.

Definition
(n.) 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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