ei·co·sa·noid (ī'kō-sə-noid') n. Any of a group of substances that are derived from arachidonic acid, including leukotrienes, prostaglandins, and thromboxanes.
[eicosan(e), chemical name (Greek eikosi, twenty, from its twenty carbon atoms; see wīktī- in Indo-European roots + -ane) + -oid.]
Main Entry: ei·co·sa·noid Pronunciation: I-'kO-s&-"noid Function: noun : 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
eicosanoid ei·co·sa·noid (ī-kō'sə-noid') n. Any of the physiologically active substances derived from arachidonic acid, including the prostaglandins, leukotrienes, and thromboxanes.