01 a. Cut off; cut short; maimed.
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1.
Cut off; cut short; maimed.
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2.
Replaced, or cut off, by a plane, especially when equally inclined to the adjoining faces; as, a truncated edge.(Min.)
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3.
Lacking the apex; -- said of certain spiral shells in which the apex naturally drops off.(Zool.)
Phrases & compounds
Truncated cone —
a cone or pyramid whose vertex is cut off by a plane, the plane being usually parallel to the base.