Word.ws English Dictionary

Plural of molecule

regular plural

The plural of molecule is molecules or moleculae.

Forms of molecule

Singularmolecule /ˈmɒl.ɪ.kjuːl/
Pluralmolecules
moleculae
Countablecountable

Molecules and moleculae in a sentence

  • This system splits water molecules and delivers some of their electrons to other molecules that help build up carbohydrates.2013 September-October, Katie L. Burke, “In the News”, in American Scientist, Sigma Xi, →OCLC, archived from the original on 03 Sep 2013
  • Catabolism is a destructive metabolism that involves the breakdown of molecules and release of energy.From the entry destructive
  • The sequence is: molecules in reproductive systems, then gametes, zygotes, morulas, blastocysts, and then fetuses.From the entry fetus
  • There are liquidogenous and gasogenous molecules, which co-exist in proportions depending upon the temperature.From the entry liquidogenous
  • We live in an orderly universe, where rules govern both the movements of planets and the binding of molecules.From the entry orderly

Meaning of molecule

  1. noun The smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds.
  2. noun A tiny amount.

Full definition of molecule

Questions about the plural of molecule

What is the plural of molecule?
The plural of molecule is molecules or moleculae.
Which is correct, molecules or moleculae?
Both are used. molecules is the more common of the two in English writing.
Is molecule countable?
Molecule is a countable noun.

Source and license

Adapted from Wiktionary: molecule (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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Cite this page: “Plural of molecule.” Word.ws, https://word.ws/plural/molecule. Based on Wiktionary, CC BY-SA 4.0.