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.