Alternative form of Question Period

Alternative spelling of quasiperiodic

(idiomatic, slang, euphemistic) Menstruating.

plural of period of time

plural of time period

(historical) The Uruk period.

(historical) A period between circa 4000 to 3100 BC which saw the emergence of urban life in Mesopotamia and the Sumerian civilization.

(UK, television) A period of time on a Saturday during which football matches may not be broadcast (so as to avoid reduced attendance in person at other football matches that are not being televised).

plural of closed period

(chemistry) A tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same group (column).