(1) - Designation (n.) Use or application; import; intention; signification, as of a word or phrase. (2) - Designation (n.) That which designates; a distinguishing mark or name; distinctive title; appellation. (3) - Designation (n.) Selection and appointment for a purpose; allotment; direction. (4) - Designation (n.) The act of designating; a pointing out or showing; indication.