Wiktionary
thromboxane
n. (context organic compound medicine English) Any of a number of eicosanoids, related to prostaglandin, that have a role in the clotting of blood
Wikipedia
Thromboxane
Thromboxane is a member of the family of lipids known as eicosanoids. The two major thromboxanes are thromboxane A2 and thromboxane B2. The distinguishing feature of thromboxanes is a 6-membered ether-containing ring.
Thromboxane is named for its role in clot formation ( thrombosis).