a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations | an unenlightened state |
the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause | an unilluminated area |
an amount of time | absence of light or illumination |
the interval taken to complete one cycle of a regularly repeating phenomenon | absence of moral or spiritual values |
a unit of geological time during which a system of rocks formed | the time after sunset and before sunrise while it is dark outside |
the end or completion of something | |
(ice hockey) one of three divisions into which play is divided in hockey games | |