\De*tun"cate\, v. t. [imp. & p. p. {Detruncated}; p. pr. & vb. n. {Detruncating}.] [L. detruncatus, p. p. of detruncare to cut off; de + truncare to maim, shorten, cut off. See {Truncate}.] To shorten by cutting; to cut off; to lop off.