period in Chinese

(chiefly, North America) That's final; that's the end of the matter (analogous to a period ending a sentence); end of story.

(now, chiefly, North America, Philippines) The punctuation mark “.” (indicating the ending of a sentence or marking an abbreviation).

The length of time during which the same characteristics of a periodic phenomenon recur, such as the repetition of a wave or the rotation of a planet. [from 17th c.]

(chemistry) A row in the periodic table of the elements. [from 19th c.]

(geology) A geochronologic unit of millions to tens of millions of years; a subdivision of an era, and subdivided into epochs.