RAP'ID, a. [L. rapidus, from rapio, the primary sense of which is to rush.]

1. Very swift or quick; moving with celerity; as a rapid stream; a rapid flight; a rapid motion.

Part shun the goal with rapid wheels.

2. Advancing with haste or speed; speedy in progression; as rapid growth; rapid improvement.

3. Of quick utterance of words; as a rapid speaker.