Gorgonian

Gor‐go″ni‐an (?), a. [L. Gorgoneus.]

1. Pertaining to, or resembling, a Gorgon; terrifying into stone; terrific.

The rest his look

Bound with Gorgonian rigor not to move. Milton.

2. (Zoöl.) Pertaining to the Gorgoniacea; as, gorgonian coral.