Meanings
nounpentamethylene (plural pentamethylenes)
plural pentamethylenes
- especiallyin compoundschemistryFive methylene groups in a molecule
Synonyms & antonyms
nounSynonym of cyclopentane.
Similar
Origin
From penta- + methylene, being composed of five methylene residues.
Full word history & related roots →Cite this entry
APA
pentamethylene. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/pentamethylene
MLA
“pentamethylene.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pentamethylene. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “pentamethylene,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/pentamethylene.
Source: pentamethylene on Wiktionary, CC BY-SA 4.0.