\Com*mem`o*ra"tion\, n. [L. commemoratio.]
1. The act of commemorating; an observance or celebration
   designed to honor the memory of some person or event.
         This sacrament was designed to be a standing
         commemoration of the death and passion of our Lord.
                                               --Abp.
                                               Tillotson.
         The commonwealth which . . . chooses the most
         flagrant act of murderous regicide treason for a
         feast of eternal commemoration.       --Burke.
2. Whatever serves the purpose of commemorating; a memorial.
{Commemoration day}, at the University of Oxford, Eng., an
   annual observance or ceremony in honor of the benefactors
   of the University, at which time honorary degrees are
   conferred.