eicosanoid

noun

ei·​cos·​a·​noid ī-ˈkō-sə-ˌnȯid How to pronounce eicosanoid (audio)
: any of a class of compounds (such as the prostaglandins) derived from polyunsaturated fatty acids (such as arachidonic acid) and involved in cellular activity

Examples of eicosanoid 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.
Impact on Hormone Production and Genetic Function Omega-3 fatty acids serve as precursors for the production of hormone-like substances called eicosanoids. Amber Smith, Discover Magazine, 5 Oct. 2023 Polyunsaturated oils from corn, safflower and soybean contain lots of omega-6 fatty acids, which are precursors to inflammatory compounds known as eicosanoids. Dorothy Kieffer, sacbee.com, 29 May 2017

Word History

Etymology

eicosa- containing 20 atoms (from Greek eikosa- twenty, from eikosi) + -noic, suffix used in names of fatty acids (from -ane + -oic) + -oid entry 1 — more at vigesimal

First Known Use

1980, in the meaning defined above

Time Traveler
The first known use of eicosanoid was in 1980

Cite this Entry

“Eicosanoid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eicosanoid. Accessed 1 Mar. 2025.

Medical Definition

eicosanoid

noun
ei·​co·​sa·​noid ī-ˈkō-sə-ˌnȯid How to pronounce eicosanoid (audio)
: any of a class of compounds (as the prostaglandins, leukotrienes, and thromboxanes) derived from polyunsaturated fatty acids (as arachidonic acid) and involved in cellular activity

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