Anniversary

a.	1.	Returning with the year, at a stated time; annual; yearly; as, an anniversary feast. Anniversary day (R. C. Ch.) See Anniversary, n., 2. Anniversary week that week in the year in which the annual meetings of religious and benevolent societies are held in Boston and New York.
n.	1.	The annual return of the day on which any notable event took place, or is wont to be celebrated; as, the anniversary of the Declaration of Independence.
	2.	(R. C. Ch.) The day on which Mass is said yearly for the soul of a deceased person; the commemoration of some sacred event, as the dedication of a church or the consecration of a pope.
	3.	The celebration which takes place on an anniversary day.

Noun

1.

anniversary - the date on which an event occurred in some previous year (or the celebration of it) Synonyms: day of remembrance

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