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- Dictionaryspeed/spiːd/
noun
- 1. the rate at which someone or something moves or operates or is able to move or operate: "we turned on to the runway and began to gather speed" Similar
- 2. each of the possible gear ratios of a bicycle or motor vehicle.
verb
- 1. move quickly: "I got into the car and home we sped" Similar Opposite
- 2. make prosperous or successful: archaic "may God speed you"
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Speed definition: rapidity in moving, going, traveling, proceeding, or performing; swiftness; celerity. See examples of SPEED used in a sentence.
noun. uk / spiːd / us / spiːd / speed noun (RATE OF MOVEMENT) Add to word list. B1 [ C or U ] how fast something moves: He was travelling at a speed of 90 mph. The car has a top speed of 155 miles per hour. You should lower / reduce your speed as you approach a junction. On a clear, straight road you can gather / pick up speed.
speed (originally prosperity or success) may apply to human or nonhuman activity and emphasizes the rate in time at which something travels or operates: the speed of light, of a lens, of an automobile, of thought. velocity, a more learned or technical term, is sometimes interchangeable with speed: the velocity of light; it is commonly used to ...
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. : the sensitivity of a photographic film, plate, or paper expressed numerically. b.
speed. (spēd) n. 1. Physics The rate or a measure of the rate of motion, especially: a. Distance traveled divided by the time of travel. b. The limit of this quotient as the time of travel becomes vanishingly small; the first derivative of distance with respect to time. c. The magnitude of a velocity. 2.
Speed most often describes acceleration or a high rate of motion. When something picks up too much speed, it can run off course, like a kid on a bike zooming uncontrollably down a steep hill. Speed can be a noun or verb. As a noun, it's an indicator of pace, as in the speed of a car.
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.
Definition of speed noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
Speed definition: rapidity in moving, going, traveling, proceeding, or performing; swiftness; celerity. See examples of SPEED used in a sentence.
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.
