Obs. Pl. frustula. [L. frustulum small piece.] a. A fragment, an atom. b. Math. A small frustum.
1700. S. Parker, Six Philosoph. Ess., 109. Nor yet could each such Frustulum have been so modify’d and temper’d as we find, unless by the same.
1785. Herschel, in Phil. Trans., LXXV. 241. Suppose a rectangular cone cut into frustula by … planes perpendicular to the axis.
