1. Very swift or quick; moving with celerity; fast; as, a rapid stream; a rapid flight; a rapid motion.
Ascend my chariot; guide the rapid wheels. --Milton.
2. Advancing with haste or speed; speedy in progression; in quick sequence; as, rapid growth; rapid improvement; rapid recurrence; rapid succession.
3. Quick in execution; as, a rapid penman.
Rap·id, Rap·ids , n. The part of a river where the current moves with great swiftness, but without actual waterfall or cascade; sometimes called whitewater; -- usually used in the plural; as, the Lachine rapids in the St. Lawrence. For boaters on the river, it is a place that can be hazardous, with danger of capsizing or crashing into large rocks.
Row, brothers, row, the stream runs fast,
The rapids are near, and the daylight's past. --Moore.
adj 1: done or occurring in a brief period of time; "a rapid rise
through the ranks"
2: characterized by speed; moving with or capable of moving
with high speed; "a rapid movment"; "a speedy car"; "a
speedy errand boy" [syn: speedy]
n : a part of a river where the current is very fast