a self-contained part of a larger composition (written or musical)
a very thin slice (of tissue or mineral or other substance) for examination under a microscope
a distinct region or subdivision of a territorial or political area or community or group of people
one of several parts or pieces that fit with others to constitute a whole object
one of the portions into which something is regarded as divided and which together constitute a whole
the basic rhythmic unit in a piece of music
recurring at regular intervals
an interval during which a recurring sequence of events occurs
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)
