the distance between things | a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations |
a set containing all points (or all real numbers) between two given endpoints | the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause |
the difference in pitch between two notes | an amount of time |
a definite length of time marked off by two instants | 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 |