Pĕr'i-clāse, n.
n. [Gr. περί, around, and κλάσις, fracture, from κλάω, to break.] (Min.) A grayish or dark-green mineral, consisting of magnesia with a small proportion of protoxide of iron. Dana.
n. [Gr. περί, around, and κλάσις, fracture, from κλάω, to break.] (Min.) A grayish or dark-green mineral, consisting of magnesia with a small proportion of protoxide of iron. Dana.