a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations | royal authority; the dominion of a monarch |
the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause | the period during which a monarch is sovereign |
an amount of time | a period during which something or somebody is dominant or powerful |
the interval taken to complete one cycle of a regularly repeating phenomenon | |
a unit of geological time during which a system of rocks formed | |
the end or completion of something | |
(ice hockey) one of three divisions into which play is divided in hockey games | |