- an essential fatty acid, C20H32O2, found in the lipids of most tissues, that is a precursor in the synthesis of prostaglandins, prostacyclins, and related effectors.
Origin of arachidonic acid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a fatty acid occurring in animal cells: the metabolic precursor of several groups of biologically active substances, including prostaglandins
- An unsaturated fatty acid found in animal fats that is essential in human nutrition and is a precursor in the biosynthesis of some prostaglandins.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.