Search results
the rate at which light or sound travels: The speed of light is 300 million metres per second. These planes travel at twice the speed of sound. [ C ] a gear :
speed. 1 of 2. noun. ˈspēd. Synonyms of speed. 1. a. : rate of motion: such as. (1) : velocity sense 1. (2) : the magnitude of a velocity irrespective of direction. b. : the act or state of moving swiftly : swiftness. c. : impetus. 2. : swiftness or rate of performance or action : velocity sense 3a. 3. a.
Speed definition: rapidity in moving, going, traveling, proceeding, or performing; swiftness; celerity. See examples of SPEED used in a sentence.
a scalar measure of the rate of movement of a body expressed either as the distance travelled divided by the time taken (average speed) or the rate of change of position with respect to time at a particular point (instantaneous speed).
Galileo defined speed as the distance covered per unit of time. In equation form, that is =, where is speed, is distance, and is time. A cyclist who covers 30 metres in a time of 2 seconds, for example, has a speed of 15 metres per second.
Speed can be a noun or verb. As a noun, it's an indicator of pace, as in the speed of a car. As a noun, it's also a drug that keeps you awake, very awake. As a verb, it means to “move along quickly,” like how you speed around on your bike.
speed may apply to human or nonhuman activity; it emphasizes the rate in time at which something travels or operates: the speed of an automobile; the speed of thought.
Definition of speed noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
how fast something moves or happens: high/ low speed. He was travelling at a speed of 90 mph. Fewer examples. We were driving at full speed. He's been working to improve his speed. There's always a trade-off between speed and quality. They rounded the corner at high speed. We work at the same speed.
speed meaning, definition, what is speed: the rate at which something moves or tra...: Learn more.
