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

(obsolete, intransitive) To come to a period; to conclude. / (obsolete, transitive, rare) To put an end to.

The process of categorizing something (e.g. history) into named periods.

(inorganic chemistry) Either of two oxyanions of iodine; any salt containing these anions

plural of period

plural of periodization

(transitive) To divide (history) into periods.

simple past tense and past participle of period

present participle of period

plural of periodate