com·mem·o·rate [ kə mémmə ràyt ](past and past participlecom·mem·o·rat·ed, present participlecom·mem·o·rat·ing, 3rd person present singularcom·mem·o·rates)
transitive verb
Definition:
1. remember something ceremonially: to honor the memory of somebody or something in a ceremony a service held to commemorate the dead
2. be memorial to something: to serve as a memorial to something
[Mid-17th century. < Latin commemorat-, past participle of commemorare "call to mind clearly" < memorare "remind" < memor "mindful"]