'Truncation' definitions:

Definition of 'truncation'

From: WordNet
noun
The property of being truncated or short [syn: shortness, truncation]
noun
The replacement of an edge or solid angle (as in cutting a gemstone) by a plane (especially by a plane that is equally inclined to the adjacent faces)
noun
The act of cutting short; "it is an obvious truncation of the verse"; "they were sentenced to a truncation of their limbs"

Definition of 'Truncation'

From: GCIDE
  • Truncation \Trun*ca"tion\, n. [L. truncatio.]
  • 1. The act of truncating, lopping, or cutting off. [1913 Webster]
  • 2. The state of being truncated. [1913 Webster]
  • 3. (Min.) The replacement of an edge or solid angle by a plane, especially when the plane is equally inclined to the adjoining faces. [1913 Webster]