Added 9 October 2026
molecule
/ˈmɒl.ɪ.kjuːl/ noun
In Latin: molecula Wiktionary
noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about molecule at Wordnik → Where our words come from →
- (physics and chemistry) the simplest structural unit of an element or compound.
- (nontechnical usage) a tiny piece of anything.
Origin
Borrowed from French molécule, from New Latin molecula (“a molecule”), diminutive of Latin moles (“a mass”).
From Wiktionary, via Kaikki.org (CC BY-SA)