September is a song by American funk band Earth, Wind & Fire, written by Maurice White, Al McKay, and Allee Willis. It was recorded during the I Am sessions and released as a single in 1978. Featured on the band's album The Best of Earth, Wind & Fire, Vol. 1, September reached number one on the US R&B chart, number eight on the Billboard Hot 100, and number three on the UK singles chart.
Note that K is also the symbol for the kelvin (see below) and is often used as a symbol for the karat. Also note that the symbol for the metric prefix kilo- (1000) is actually k-, not K-. Return to the Dictionary Contents page.
3. (General Physics) a measure of the compactness of a substance, expressed as its mass per unit volume. It is measured in kilograms per cubic metre or pounds per cubic foot.