rhythm

noun

1.
the basic rhythmic unit in a piece of music
2.
recurring at regular intervals
3.
an interval during which a recurring sequence of events occurs
Derived from:
rhythmic
4.
the arrangement of spoken words alternating stressed and unstressed elements
5.
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)
6.
(architecture) the repetitive use of a group of visual elements to establish a recognizable pattern