variolite

Noun

var=i=o=lite

CIDE DICTIONARY

variolite, n. [L. varius various + -lite: cf. F. variolite.].

A kind of diorite or diabase containing imbedded whitish spherules, which give the rock a spotted appearance. [1913 Webster]

variolite, n. a rock with embedded small spherical masses causing on its surface an appearance like smallpox pustules.

Derivative

variolitic adj.

Etymology

as VARIOLE + -ITE(1)