period

An amount of time.

“a time period of 30 years”

“hastened the period of time of his recovery”

The monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause.

A unit of geological time during which a system of rocks formed.

“ganoid fishes swarmed during the earlier geological periods”

A punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations.

“in England they call a period a stop”

(ice hockey) one of three divisions into which play is divided in hockey games.

The end or completion of something.

“death put a period to his endeavors”

“a change soon put a period to my tranquility”

The interval taken to complete one cycle of a regularly repeating phenomenon.