Wiktionary
thrombospondin
n. (context biochemistry English) Any of a group of secreted glycoproteins with antiangiogenic properties
Wikipedia
Thrombospondin
Thrombospondins are a family of secreted glycoproteins with antiangiogenic functions. Due to their dynamic role within the extracellular matrix they are considered matricellular proteins. The first member of the family, thrombospondin 1 (THBS1), was discovered in 1971 by Nancy L. Baenziger.