commemoration

UK: /kəˌmɛməˈreɪʃ^ən/

US: /kəˌmɛməˈreɪʃən/

US: (kə mem′ə rā′shən)

WordReference Random House Learner's Dictionary of American English © 2026

com•mem•o•ra•tion /kəˌmɛməˈreɪʃən/   n. 

1. [uncountable] an act of commemorating something: [in + ~]
   a ceremony in commemoration of war veterans.
2. a ceremony or occasion to commemorate something:
   [countable] a small commemoration on Memorial Day.

WordReference Random House Unabridged Dictionary of American English © 2026

com•mem•o•ra•tion  (kə mem′ə rā′shən), n. 

1. the act of commemorating.
2. a service, celebration, etc., in memory of some person or event.
3. a memorial.
4. Religion (in many Christian churches) a special service or prayer for commemorating the lesser feast on days on which two feasts of unequal rank are celebrated.

• Latin commemorātiōn- (stem of commemorātiō), equivalent. to commemorāt(us) (see commemorate) + -iōn- -ion
• Middle French)
• Middle English (1350–1400

com•mem′o•ra′tion•al, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::

commemoration / kəˌmɛməˈreɪʃən/ noun

1. the act or an instance of commemorating
2. a ceremony or service in memory of a person or event

comˌmemoˈrational adjective