secosteroid

Etymology
From.

Pronunciation

 * sek'ō-stēr'oyd

Noun

 * 1)  Any of the subclass of many terpenoid compounds of the tetracyclic steroid class that are structural relatives bearing a cleavage of one of the four rings of that parent class. The prototypical secosteroid is cholecalciferol, vitamin D3.

Related terms

 * secosteroidal