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
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Built for integration Optical spectroscopy and microwave tests showed the molecular qubits align with frequencies already used in silicon photonics. Aamir Khollam, Interesting Engineering, 2 Oct. 2025 He was not involved in the new research but noted that the wealth of observational detail revealed a rich molecular chemistry within the disk around the planet. Ashley Strickland, CNN Money, 2 Oct. 2025 These chemical fossils—the molecular remnants of once-living organisms that have been buried, transformed, and preserved in sediment over time—were discovered in rocks that date back to more than 541 million years ago, during the Ediacaran Period. Maria Azzurra Volpe, MSNBC Newsweek, 1 Oct. 2025 Their model, called the M3GNet framework, accelerated simulations of molecular dynamics to evaluate properties of the materials such as atomic diffusivity. Andrew Moseman, IEEE Spectrum, 1 Oct. 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 4 Oct. 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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