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molecule

[ mol-uh-kyool ]
/ ˈmɒl əˌkyul /
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See synonyms for: molecule / molecules on Thesaurus.com

noun
Chemistry, Physics. the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.
Chemistry. a quantity of a substance, the weight of which, measured in any chosen unit, is numerically equal to the molecular weight; gram molecule.
any very small particle.
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Origin of molecule

1785–95; earlier molecula<New Latin, equivalent to Latin mōlē(s) mass + -cula-cule1

OTHER WORDS FROM molecule

sub·mol·e·cule, nounsu·per·mol·e·cule, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use molecule in a sentence

British Dictionary definitions for molecule

molecule
/ (ˈmɒlɪˌkjuːl) /

noun
the simplest unit of a chemical compound that can exist, consisting of two or more atoms held together by chemical bonds
a very small particle

Word Origin for molecule

C18: via French from New Latin mōlēcula, diminutive of Latin mōlēs mass, mole 4
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

Medical definitions for molecule

molecule
[ mŏlĭ-kyōōl′ ]

n.
The smallest particle into which an element or a compound can be divided without changing its chemical and physical properties; a group of atoms that is held together chemically.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for molecule

molecule
[ mŏlĭ-kyōōl′ ]

A group of two or more atoms linked together by sharing electrons in a chemical bond. Molecules are the fundamental components of chemical compounds and are the smallest part of a compound that can participate in a chemical reaction.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for molecule

molecule
[ (mol-uh-kyoohl) ]

A combination of two or more atoms held together by a force between them. (See covalent bond and ionic bond.)

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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