/an'euh verr"seuh ree/ , n. , pl. anniversaries , adj.
n.
1. the yearly recurrence of the date of a past event: the tenth anniversary of their marriage.
2. the celebration or commemoration of such a date.
3. See wedding anniversary .
adj.
4. returning or recurring each year; annual.
5. pertaining to an anniversary: an anniversary gift. Abbr.: anniv.
[ 1200-50; ME anniversarie ( dies ) anniversaria anniversary (day), L anniversarius recurring yearly, equiv. to anni- (comb. form of annus year) + vers ( us ) turned, ptp. of vertere ( vert- turn + -tus ptp. suffix) + -arius -ARY ]