Trun-cā'tion, n.
n. [Lat. truncatio.]
Sense 1. The act of truncating, lopping, or cutting off.
Sense 2. The state of being truncated.
a, truncated angles; b, truncated cone; c, truncated cube.
Sense 3. (Min.) The replacement of an edge by a plane equally inclined to the adjoining faces. Dana.