= prismatic, adj. 2a. Obsolete.

Having the approximate form of a prism; composed of roughly prismatic shapes. Also: = †prismatoid, adj. 1 (Crystallography obsolete rare).

Of the form of or relating to a prism or prismoid; approximately prismatic in shape.

= prismoidal, adj. 1.

= prismatic, adj. 1a; (of a crystal) having the form of a prism with pyramidal ends (= prismated, adj.).