from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Rapidity or speed of motion; swiftness.
- n. Physics A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion.
- n. The rate of speed of action or occurrence.
- n. The rate at which money changes hands in an economy.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A vector quantity that denotes the rate of change of position with respect to time, or a speed with the directional component.
- n. Rapidity of motion.
- n. The rate of occurrence.
- n. The number of times that an average unit of currency is spent during a specific period of time.
from the GNU version of the Collaborative International Dictionary of English
- n. Quickness of motion; swiftness; speed; celerity; rapidity
- n. Rate of motion; the relation of motion to time, measured by the number of units of space passed over by a moving body or point in a unit of time, usually the number of feet passed over in a second. See the Note under Speed.
from The Century Dictionary and Cyclopedia
- n. The velocity at which the mode of flow of a liquid, in a pipe or channel, is modified by the setting up of eddy-motion and the consequent interruption of the stream lines.
- n. Same as critical velocity .
- n. The velocity of a given individual wave-length of light as opposed to the group velocity of a complex beam taken as a whole.
- n. Quickness of motion; speed in movement; swiftness; rapidity; celerity: used only (or chiefly) of inanimate objects. See def. 2.
- n. .2. In physics, rate of motion; the rate at which a body changes its position in space; the rate of change of position of a point per unit of time.
- n. In music, decided rapidity of tempo or pace, particularly in a bravura passage.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. distance travelled per unit time
Middle English velocite, from Old French, from Latin vēlōcitās, from vēlōx, vēlōc-, fast; see weg- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin vēlōcitās ("speed"), from vēlōx ("fast"). (Wiktionary)