an amount of time
the interval taken to complete one cycle of a regularly repeating phenomenon
(ice hockey) one of three divisions into which play is divided in hockey games
a unit of geological time during which a system of rocks formed
the end or completion of something
the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause--Hippocrates--Aristotle
a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations
- The bitch's cycle is divided into four periods.
- Timer must be disabled when graphing readings for extended periods.