PERIOD (Gr. irepioSos, a going or way round, circuit, irepi, round, and 656s, way, road), a circuit or course of time, a cycle; particularly the duration of time in which a'planet revolves round its Sun, or a satellite round its primary, a 'definite or indefinite recurring interval of time marked by some special or peculiar character, e.g. in history, literature, art, etc.; it is so used of a division of geological time. Particular uses of the word are for the various phases through which a disease passes, the termination or conclusion of. any course of events, the pause at the end of a completed sentence, and the mark (.) used to signify the same (see PUNCTUATION).
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)