say it: MAH-luh-kyool
molecule is a noun meaning "(physics and chemistry) the simplest structural unit of an element or compound". It carries 2 recorded senses.
(physics and chemistry) the simplest structural unit of an element or compound
physics · chemistry
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for molecule come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.