period >> /ˈpɪriəd/
Definition: [noun] A length or portion of time.
Example: he had long periods of depression
Definition: [noun] The interval of time between successive occurrences of the same state in an oscillatory or cyclic phenomenon, such as a mechanical vibration, an alternating current, a variable star, or an electromagnetic wave.
Definition: [noun] A flow of blood and other material from the lining of the uterus, occurring in nonpregnant women at intervals of about 28 days between puberty and menopause and typically lasting for a few days.
Example: she's got her period
Definition: [noun] A punctuation mark (.) used at the end of a sentence or an abbreviation.
Example: As he talked he jabbed the lit end of his cigar into the air as though he were punctuating his sentences by burning periods in the air.
Definition: [noun] A set of elements occupying an entire horizontal row in the periodic table.
Example: The horizontal rows or periods also have predictable trends in characteristics because as you move left to right in a row only one electron is added changing the atomic number by one.
Definition: [noun] A complex sentence, especially one consisting of several clauses, constructed as part of a formal speech or oration.
Definition: [adjective] Belonging to or characteristic of a past historical time, especially in style or design.
Example: a splendid selection of period furniture