Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. speed, swiftness; the condition of being rapid
  • n. A measure of velocity relative to the speed of light
  • n. A measure of the velocity of a particle in a beam relative to the beam#s axis

from the GNU version of the Collaborative International Dictionary of English

  • n. The quality or state of being rapid; swiftness; celerity; velocity.

from The Century Dictionary and Cyclopedia

  • n. The state or property of being rapid; celerity of motion or action; quickness of performance or execution; fast rate of progress or advance.
  • n. Synonyms Speed, Swiftness, etc. (see quickness), haste, expedition, despatch.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a rate that is rapid

Etymologies

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