mo·​lec·​u·​lar | \ mə-ˈle-kyə-lər How to pronounce molecular (audio) \

Definition of molecular

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

Other Words from molecular

molecularly \ mə-​ˈle-​kyə-​lər-​lē How to pronounce molecular (audio) \ adverb

Examples of molecular in a Sentence

Recent Examples on the Web The researchers had previously used MegaSyn to generate molecules with therapeutic potential that have the same molecular target as VX, Urbina says. Rebecca Sohn, Scientific American, 21 Apr. 2022 Several years ago, Angela Reiersen, a psychiatrist at Washington University School of Medicine in St. Louis, stumbled upon this receptor in a different context—as an alternate molecular target for the drug fluvoxamine and other antidepressants. Esther Landhuis, Wired, 19 Nov. 2020 Unvaccinated Canadian citizens or permanent residents must also continue to show proof of a molecular Covid-19 test taken before entering Canada and must also quarantine for 14 days. Sandra Macgregor, Forbes, 1 June 2022 Teaming up with Harvard molecular biologist and reproductive biology expert David Pépin, Daisy learned that a hormone produced by the ovaries called Anti-Mullerian Hormone (AMH) might be used to extend the functional life of the ovaries. Alex Zhavoronkov, Forbes, 19 May 2022 Mark Temple, a medical molecular biologist, used to spend a lot of his time in his lab at Western Sydney University in Australia researching new drugs for cancer treatments. Sofia Quaglia, Smithsonian Magazine, 17 May 2022 Fully vaccinated travelers may be selected at random to take a Covid-19 molecular test upon arrival but are not required to quarantine while awaiting their test result. Suzanne Rowan Kelleher, Forbes, 25 Apr. 2022 Even so, the FDA says that all positive results from a breathalyzer test should be confirmed with a molecular test, also known as a polymerase chain reaction (PCR) test, the type that is sent out to a lab. Serena Coady, SELF, 19 Apr. 2022 To get the latest information about your tests, check the FDA’s website for updates about antigen tests and molecular tests. Jamie Ducharme, Time, 22 Apr. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'molecular.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of molecular

1770, in the meaning defined at sense 1

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Time Traveler for molecular

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The first known use of molecular was in 1770

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Dictionary Entries Near molecular



molecular beam

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Last Updated

5 Jul 2022

Cite this Entry

“Molecular.” Dictionary, Merriam-Webster, Accessed 9 Aug. 2022.

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More Definitions for molecular


mo·​lec·​u·​lar | \ mə-ˈle-kyə-lər How to pronounce molecular (audio) \

Kids Definition of molecular

: of or relating to a molecule molecular structure


mo·​lec·​u·​lar | \ mə-ˈlek-yə-lər How to pronounce molecular (audio) \

Medical Definition of molecular

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 perception— G. A. Miller — compare molar entry 3 sense 2

Other Words from molecular

molecularity \ -​ˌlek-​yə-​ˈlar-​ət-​ē How to pronounce molecular (audio) \ noun, plural molecularities
molecularly \ mə-​ˈlek-​yə-​lər-​lē How to pronounce molecular (audio) \ adverb


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