molecular biology


Definition of molecular biology

: a branch of biology dealing with the ultimate physicochemical organization of living matter and especially with the molecular basis of inheritance and protein synthesis

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Other Words from molecular biology

molecular biologist noun

Examples of molecular biology in a Sentence

Recent Examples on the Web

Andrew DeLaat, Medina, biochemistry and molecular biology major. Sam Boyer,, "College Corner Medina County," 9 Aug. 2019 But depression does not affect everyone, and the molecular biology of resilience for psychiatric disorders can be clearly seen by inspecting the brains of lab animals. Gary Stix, Scientific American, "Can a Pill that Boosts ‘Resilience’ Treat Depression?," 11 Apr. 2018 Olson, 63, is Exonics’ chief scientific adviser and the molecular biology department chair at UT Southwestern. Orla Mccaffrey, Dallas News, "Boston research company bets on UT Southwestern researcher's gene therapy," 18 June 2019 And researchers are beginning to bridge the gaps between disciplines—biophysics, engineering, or molecular biology—that have long frustrated progress in this area. Sally Adee, Quartz, "Our bodies are full of electricity that could help us fight cancer," 30 May 2019 The Center for Anti-Parasitic Drug Discovery and Development draws together faculty with expertise in pharmaceutical science, molecular biology and clinical testing. Bradley J. Fikes,, "UCSD steps up fight against tropical parasitical diseases," 4 July 2018 Piraye Yurttas Beim, who has a Ph.D. in molecular biology, first went to her doctor for a fertility assessment at 32. Macaela Mackenzie, Glamour, "Do You Need a Fertility Test—Even If You’re Not Trying to Get Pregnant?," 13 Dec. 2018 And advances in genetic testing and molecular biology are yielding new drugs at a remarkable pace. Emily Bobrow, WSJ, "‘Cancerland’ Review: Reason to Hope," 1 Aug. 2018 Forgoing the traditional method of brain mapping that involves marking neurons with fluorescence, Zador had taken an unusual approach that drew on the long tradition of molecular biology research at Cold Spring Harbor, on Long Island. Monique Brouillette, WIRED, "New Brain Maps With Unmatched Detail May Change Neuroscience," 8 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'molecular biology.' 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 biology

1884, in the meaning defined above

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The first known use of molecular biology was in 1884

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molecular biology


Medical Definition of molecular biology

: a branch of biology dealing with the study and understanding of biological activity and processes at the molecular level and especially the molecular basis of gene function and protein synthesis Molecular biology experiments proved that small pieces of DNA did sometimes move within or between chromosomes, thereby triggering changes in gene expression.— John Rennie, Scientific American, March 1993 The test is based on several recent advances in molecular biology, including the new insight that cells slip into the uncontrolled growth known as cancer through defects in specific enzymes that monitor and control division.— Lawrence K. Altman, The New York Times, 11 Oct. 1994

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