eicosanoid

From Ancient Greek εἴκοσι (eíkosi, “twenty”) + εἶδος (eîdos, “form, likeness”).

eicosanoid (plural eicosanoids)

1. (biochemistry) Any of a family of naturally-occurring substances derived from 20-carbon polyunsaturated fatty acids; they include the prostaglandins, thromboxanes, leukotrienes and epoxyeicosatrienoic acids; they function as hormones.

• icosanoid