'Disdiaclast' definitions:

Definition of 'Disdiaclast'

From: GCIDE

Disdiaclast \Dis*di"a*clast\, n. [Gr. di`s- twice + diakla^n to break in twain; dia` through + kla^n to break.] (Physiol.) One of the dark particles forming the doubly refracting disks of muscle fibers. [1913 Webster]