Period

A portion of time as limited and determined by some recurring phenomenon, as by the completion of a revolution of one of the heavenly bodies; a division of time, as a series of years, months, or days, in which something is completed, and ready to recommence and go on in the same order; as, the period of the sun, or the earth, or a comet.

A stated and recurring interval of time; more generally, an interval of time specified or left indefinite; a certain series of years, months, days, or the like; a time; a cycle; an age; an epoch; as, the period of the Roman republic.

One of the great divisions of geological time; as, the Tertiary period; the Glacial period. See the Chart of Geology.

The termination or completion of a revolution, cycle, series of events, single event, or act; hence, a limit; a bound; an end; a conclusion.

A complete sentence, from one full stop to another; esp., a well-proportioned, harmonious sentence.

The punctuation point [.] that marks the end of a complete sentence, or of an abbreviated word.

One of several similar sets of figures or terms usually marked by points or commas placed at regular intervals, as in numeration, in the extraction of roots, and in circulating decimals.

The time of the exacerbation and remission of a disease, or of the paroxysm and intermission.

A complete musical sentence.

To put an end to.

To come to a period; to conclude. [Obs.] "You may period upon this, that," etc.

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

the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause; "the women were sickly and subject to excessive menstruation"; "a woman does not take the gout unless her menses be stopped" - Hippocrates; "the semen begins to appear in males and to be emitted at the same time of life that the catamenia begin to flow in females" - Aristotle

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’"

a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods"