TRUNCATION

truncation. Truncation, n. the act of lopping or maiming

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Trun‐ca″tion (?), n. [[L. truncatio.]] 1. 1. The act of truncating, lopping, or cutting off.
2. 2. The state of being truncated.
3. 3. (Min.) The replacement of an edge or solid angle by a plane, especially when the plane is equally inclined to the adjoining faces.