molecular

adjective

mo·​lec·​u·​lar mə-ˈle-kyə-lər How to pronounce molecular (audio)
1
: of, relating to, consisting of, or produced by molecules
molecular oxygen
2
: of or relating to individual or small components
a molecular view of the American Civil War
molecularly adverb

Examples of molecular in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Tattoo inks are made from different pigments, and each color has a unique molecular structure and composition. Marie Lodi, Allure, 1 June 2025 The first is Alina Chan, a molecular biologist at the Broad Institute of MIT and Harvard, the author of Viral: The Search for the Origin of COVID-19, and a dogged advocate for more vigorous investigations of the lab-leak theory and tighter restrictions on virology research. Daniel Engber, The Atlantic, 20 May 2025 The fish oil is also in a triglyceride molecular form—how it’s naturally found in fish—which helps for optimal absorption. Brianna Peters, Vogue, 18 May 2025 For example, the symmetries of molecular structures are categorized by different point groups. Courtney Gibbons, The Conversation, 15 May 2025 See All Example Sentences for molecular

Word History

First Known Use

1770, in the meaning defined at sense 1

Time Traveler
The first known use of molecular was in 1770

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Cite this Entry

“Molecular.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molecular. Accessed 11 Jun. 2025.

Kids Definition

molecular

adjective
mo·​lec·​u·​lar mə-ˈlek-yə-lər How to pronounce molecular (audio)
: of, relating to, or produced by molecules

Medical Definition

molecular

adjective
mo·​lec·​u·​lar mə-ˈlek-yə-lər How to pronounce molecular (audio)
1
: of, relating to, consisting of, or produced by molecules
molecular oxygen
2
: relating to or emphasizing individual responses or structures of behavior
proceed by more and more detailed analysis to the molecular facts of perceptionG. A. Miller
compare molar entry 3 sense 2
molecularity noun
plural molecularities
molecularly adverb

More from Merriam-Webster on molecular

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