anniversary

noun

an·​ni·​ver·​sa·​ry ˌa-nə-ˈvərs-rē 

-ˈvər-sə-

plural anniversaries

1

: the annual recurrence of a date marking a notable event

a wedding anniversary

broadly : a date that follows such an event by a specified period of time measured in units other than years

the 6-month anniversary of the accident

2

: the celebration of an anniversary

Examples of anniversary in a Sentence

the anniversary of the invasion

The exhibit will close on the 100th anniversary of the artist's death.

Recent Examples on the Web

The company, which celebrated its 130th anniversary in 2025, now sells seven other products, as well. —Gabriella Fine, Baltimore Sun, 26 Apr. 2026

The royals are also slated to attend a block party in Virginia celebrating the anniversary. —Theresa Braine, New York Daily News, 26 Apr. 2026

More than two centuries after the 13 colonies rebelled against King George III and sent his redcoats packing, a direct descendant of that monarch will arrive Monday in Washington to mark the 250th anniversary of American independence from British rule. —Yuliya Talmazan, NBC news, 26 Apr. 2026

Like 250 years The king has the serendipitous timing of arriving as the 250th anniversary of the Declaration of Independence approaches. —Susan Page, USA Today, 26 Apr. 2026

Word History

Etymology

Middle English anniversarie, from Medieval Latin anniversarium, from Latin, neuter of anniversarius returning annually, from annus year + versus, past participle of vertere to turn — more at annual, worth

First Known Use

13th century, in the meaning defined at sense 1

Rhymes for anniversary

• bursary
• cursory
• nursery

Kids Definition

anniversary

noun

an·​ni·​ver·​sa·​ry ˌan-ə-ˈvərs-(ə-)rē 

plural anniversaries

1

a

: the annual return of the date of a special event

b

: a date that follows such an event by a specified period of time

the 6-month anniversary of the accident

2

: the celebration of an anniversary

Etymology

Middle English anniversarie "anniversary," from Latin anniversarium (same meaning), literally "turning of the year," from annus "year" and versus "turned," from vertere "to turn" — related to converse, universe, versatile