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

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Other Words from molecular

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

Examples of molecular in a Sentence

Recent Examples on the Web

The Nobel Prize in Physiology or Medicine was awarded today to Jeffrey Hall, Michael Rosbash and Michael Young for discoveries of molecular mechanisms controlling circadian rhythms. Steve Mirsky, Scientific American, "Nobel Prize Explainer: Circadian Rhythm's Oscillatory Control Mechanism," 2 Oct. 2017 In addition to the molecular shrinkage that happens during the freeze-drying process, each tablet is formulated with hyaluronic acid of the lowest molecular weight to begin with. Rebecca Dancer, Allure, "Facialist Georgia Louise Launches the Pure Molecule, Freeze-Dried Skin-Care Tablets," 18 Apr. 2019 The center of this galaxy, the first and second arrondissements, has a dense molecular gravity in terms of historical interest: the Louvre, the Tuileries, the Place Vendôme, the Ritz. Jay Mcinerney, Vogue, "Why, Oh Why Do I Love Paris? Jay McInerney Counted the Ways in a 1986 Story for Vogue, Republished Here in Solidarity With the French Capital, Where Notre-Dame Burned," 16 Apr. 2019 The scientists also found multiple new molecular markers in people’s blood after weight gain that can indicate increased inflammation throughout the body and, rather worrisomely, the possible beginnings of cardiomyopathy, or an enlarged heart. Gretchen Reynolds, New York Times, "Big Data Comes to Dieting," 25 Jan. 2018 Here’s a diagram showing what’s happening on a molecular scale. Brian Resnick, Vox, "The surprising science of why ice is so slippery," 31 Jan. 2019 Experiments on animals in which certain molecular clock genes were deactivated in the pancreas showed that the animals acted normally, only to later develop diabetes. Jacqueline Detwiler, Popular Mechanics, "Why You Should Have Heart Surgery in the Afternoon," 26 Dec. 2018 But bacteria have evolved to resist beta-lactam by producing an enzyme that breaks the ringlike part of its molecular structure. Jonathon Keats, Discover Magazine, "Bacteria That Eat Drugs Could Help Solve the Antibiotic Resistance Crisis," 8 Nov. 2018 Nucleation is what happens at the very beginning of the freezing process, when a few water molecules start to arrange themselves into a solid molecular structure. Jennifer Ouellette, Ars Technica, "Weird water phase “ice-VII” can grow as fast as 1,000 miles per hour," 24 Oct. 2018

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.

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First Known Use of molecular

1770, in the meaning defined at sense 1

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Statistics for molecular

Last Updated

8 May 2019

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Time Traveler for molecular

The first known use of molecular was in 1770

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

More from Merriam-Webster on molecular

Nglish: Translation of molecular for Spanish Speakers

Britannica English: Translation of molecular for Arabic Speakers

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