Origin of molecular

First recorded in 1815–25; molecule + -ar1
Related formsmo·lec·u·lar·ly, adverbmul·ti·mo·lec·u·lar, adjectivenon·mo·lec·u·lar, adjectivesub·mo·lec·u·lar, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for molecularly

Historical Examples of molecularly

British Dictionary definitions for molecularly


  1. of or relating to moleculesmolecular hydrogen
  2. logic (of a sentence, formula, etc) capable of analysis into atomic formulae of the appropriate kind
Derived Formsmolecularity (məʊˌlɛkjʊˈlærɪtɪ), nounmolecularly, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for molecularly



1823, from molecule + -ar or else from French moléculaire or Modern Latin molecularis. Molecular biology first attested 1950.

Online Etymology Dictionary, © 2010 Douglas Harper

molecularly in Medicine


  1. Of, relating to, or consisting of molecules.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.