Search results
- 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"
Powered by Oxford Dictionaries
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 definition: rapidity in moving, going, traveling, proceeding, or performing; swiftness; celerity. See examples of SPEED used in a sentence.
The meaning of SPEED is rate of motion. How to use speed in a sentence. Synonym Discussion of Speed.
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).
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.
1. rapidity in moving, traveling, performing, etc.; swiftness. 2. relative rate of motion or progress: the speed of light. 3. a gear ratio in a motor vehicle or bicycle. 4. a. the sensitivity of a photographic film or paper to light. b. the length of time a shutter is opened to expose film.
Historical definition. Italian physicist Galileo Galilei is usually credited with being the first to measure speed by considering the distance covered and the time it takes. Galileo defined speed as the distance covered per unit of time. [3] . In equation form, that is where is speed, is distance, and is time.
SPEED definition: 1. how fast something moves or happens: 2. very fast movement: 3. to move somewhere or happen…. Learn more.
Definition of speed noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
The state of being in rapid motion; rapidity. The river's speed made a rescue difficult. American Heritage. The magnitude of a velocity. Webster's New World. More Noun Definitions (7) Synonyms: vector. tempo.
