Trun"ca*ted (?), a. 1. Cut off; cut short; maimed.

2. (Min.) Replaced, or cut off, by a plane, especially when equally inclined to the adjoining faces; as, a truncated edge.

3. (Zoöl.) Lacking the apex; -- said of certain spiral shells in which the apex naturally drops off.

Truncated cone or pyramid(Geom.), a cone or pyramid whose vertex is cut off by a plane, the plane being usually parallel to the base.

Trun"ca*ted (?), a. 1. Cut off; cut short; maimed.

2. (Min.) Replaced, or cut off, by a plane, especially when equally inclined to the adjoining faces; as, a truncated edge.

3. (Zoöl.) Lacking the apex; -- said of certain spiral shells in which the apex naturally drops off.

Truncated cone or pyramid(Geom.), a cone or pyramid whose vertex is cut off by a plane, the plane being usually parallel to the base.