v. t. [ imp. & p. p. Truncated p. pr. & vb. n. Truncating. ] [ L. truncatus, p. p. of truncare to cut off, mutilate, fr. truncus maimed, mutilated, cut short. See Trunk. ] To cut off; to lop; to maim. [ 1913 Webster ]
2. (Min.) Replaced, or cut off, by a plane, especially when equally inclined to the adjoining faces; as, a truncated edge. [ 1913 Webster ]
3. (Zool.) Lacking the apex; -- said of certain spiral shells in which the apex naturally drops off. [ 1913 Webster ]
Truncated coneor Truncated pyramid (Geom.), a cone or pyramid whose vertex is cut off by a plane, the plane being usually parallel to the base. [ 1913 Webster ]
(adj) terminating abruptly by having or as if having an end or point cut off, Syn. truncated, Example:a truncate leaf; truncated volcanic mountains; a truncated pyramid