the distance between things | natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle) |
a set containing all points (or all real numbers) between two given endpoints | recurring at regular intervals |
the difference in pitch between two notes | (architecture) the repetitive use of a group of visual elements to establish a recognizable pattern |
a definite length of time marked off by two instants | the arrangement of spoken words alternating stressed and unstressed elements |
| the basic rhythmic unit in a piece of music |
| an interval during which a recurring sequence of events occurs |