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anniversary

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The definition of an anniversary is a date on which something important happens that is noted in some way each year thereafter.

(noun)

An example of an anniversary is the day on which a person got married.
An example of an anniversary is 9/11 after the bombing in New York.

See anniversary in Webster's New World College Dictionary

noun pl. anniversaries

the date on which some event occurred in an earlier year
the commemoration of such an event on that date in following years

Origin: ME anniversarie < ML anniversaria (dies), anniversary (day) < L anniversarius < annus, year + versum, pp. of vertere, to turn: see verse

adjective

that is an anniversary
of or connected with an anniversary

See anniversary in American Heritage Dictionary 4

noun pl. an·ni·ver·sa·ries

The annually recurring date of a past event, especially one of historical, national, or personal importance: a wedding anniversary; the anniversary of the founding of Rome.
A celebration commemorating such a date.

Origin:

Origin: Middle English anniversarie

Origin: , from Medieval Latin (diēs) anniversāria, anniversary (day)

Origin: , from Latin

Origin: , feminine of anniversārius, returning yearly

Origin: : annus, year; see at- in Indo-European roots

Origin: + versus

Origin: , past participle of vertere, to turn; see wer-² in Indo-European roots

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