Breadcrumb Home > Thesaurus > M Synonyms of molecule Find synonyms for: Noun 1. molecule, unit, building block usage: (physics and chemistry) the simplest structural unit of an element or compound 2. atom, molecule, particle, corpuscle, mote, speck, material, stuff usage: (nontechnical usage) a tiny piece of anything WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of molecule (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: quisling Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language