phosphorylation

noun

phos·​phor·​y·​la·​tion ˌfäs-ˌfȯr-ə-ˈlā-shən How to pronounce phosphorylation (audio)
: the process of phosphorylating a chemical compound either by reaction with inorganic phosphate or by transfer of phosphate from another organic phosphate
especially : the enzymatic conversion of carbohydrates into their phosphoric esters in metabolic processes

Examples of phosphorylation 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.
Nonetheless, the study’s findings suggest that tau phosphorylation isn’t inherently harmful. New Atlas, 30 June 2025 As the cell’s clean-up crew attempts to remove the clumps, a leading theory suggests that the abnormal tau induces phosphorylation in additional proteins leading to a cascade of neurodegeneration. William A. Haseltine, Forbes, 25 Oct. 2024 Tau phosphorylation is a crucial process related to the development of Alzheimer’s disease. Lauren Manaker Ms, Rdn, Ld, Clec, Verywell Health, 17 Nov. 2023 The researchers then focused on a specific phosphorylation site and created a mutation that prevented it from being phosphorylated. Viviane Callier, Scientific American, 24 Feb. 2023

Word History

First Known Use

1925, in the meaning defined above

Time Traveler
The first known use of phosphorylation was in 1925

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Cite this Entry

“Phosphorylation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phosphorylation. Accessed 9 Sep. 2025.

Medical Definition

phosphorylation

noun
phos·​phor·​y·​la·​tion ˌfäs-ˌfȯr-ə-ˈlā-shən How to pronounce phosphorylation (audio)
: the process of phosphorylating a chemical compound either by reaction with inorganic phosphate or by transfer of phosphate from another organic phosphate
especially : the enzymatic conversion of carbohydrates into their phosphoric esters in metabolic processes (as the conversion of glucose to glucose-6-phosphate by ATP and hexokinase)

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