To reach a higher level by increase of quantity or bulk; to swell; as, a river rises in its bed; the mercury rises in the thermometer.

To become larger; to swell; -- said of a boil, tumor, and the like.

The distance through which anything rises; as, the rise of the thermometer was ten degrees; the rise of the river was six feet; the rise of an arch or of a step.

Increase of sound; a swelling of the voice.

The beginning or source of a river. go back