a. 切短的, 缩短了的, 截短的, 削去尖角的

[计] 截去的

Truncate \Trun"cate\, 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.


Truncated \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. (Zo["o]l.) Lacking the apex; -- said of certain spiral
shells in which the apex naturally drops off.

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