designationn.[L. designatio: cf. F. dsignation.]1. The act of designating; a pointing out or showing; indication.()2. Selection and appointment for a purpose; allotment; direction.()3. That which designates; a distinguishing mark or name; distinctive title; appellation.()The usual designation of the days of the week. (Whewell.)4. Use or application; import; intention; signification, as of a word or phrase.()Finite and infinite seem . . . to be attributed primarily, in their first designation, only to those things which have parts. (Locke.)