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   speed

   /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 ratepacetempomomentum
   • ▪ rapidity of movement or action: "the accident was due to excessive speed" Similar rapidityswiftnessspeedinessalacrityquicknessfastnesscelerityvelocitydispatchpromptnessimmediacyexpeditiousnessexpeditionbrisknesssharpnesshastehurryhurriednessprecipitatenessaccelerationinformal:lickclipliterary:fleetnessrare:alacritousnessOpposite slownessdilatoriness
   • ▪ the rate at which something happens or is done: "they were bemused by the speed of events"
   • ▪ something that matches one's tastes or inclinations: informal "oak tables and chairs are more his speed"
   • 2. each of the possible gear ratios of a bicycle or motor vehicle.
   • 3. the light-gathering power or f-number of a camera lens.
   • ▪ the duration of a photographic exposure.
   • ▪ the sensitivity of photographic film to light.
   • 4. an amphetamine drug, especially methamphetamine. informal
   • 5. success; prosperity: archaic "wish me good speed"

   verb

   • 1. move quickly: "I got into the car and home we sped" Similar hurryracerunsprintdashboltdartrushhastenhurtlecareerstreakshootwhizzzoomgo like lightninggo hell for leatherspank alongbowl alongrattle alongwhirlwhooshbuzzswoopflashblastchargestampedegallopsweephareflywingscurryscudscutterscrambleinformal:beltpelttearhotfoot itzapzipwhipscootscorchburn rubbergo like a bat out of hellbombbucketshiftput one's foot downgo like the clappersleg itwheechclipboogiehightailbarrellay rubberget the lead outvulgar slang:drag/tear/haul assliterary:fleetarchaic:posthierare:driveOpposite amblestroll
   • ▪ (of a motorist) travel at a speed that is greater than the legal limit: "the car that crashed was speeding" Similar drive too fastexceed the speed limitbreak the speed limit
   • 2. make prosperous or successful: archaic "may God speed you"
   • 3. take or be under the influence of an amphetamine drug: informal "more kids than ever are speeding, tripping, and getting stoned"

   Word Origin Old Englishspēd (noun), spēdan (verb), from the Germanic base of Old English spōwan ‘prosper, succeed’, a sense reflected in early usage.

   Derivatives

   • 1. speeder noun

   Scrabble Points: 8

   • S

     1

   • P

     3

   • E

     1

   • E

     1

   • D

     2

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   More definitions, origin and scrabble points

2. byjus.com › physics › measurement-of-speedWhat Is Speed? - Definition, Formula, Unit, Types & Measurement

   byjus.com › physics › measurement-of-speed

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   Learn what is speed, how to measure it, and what are its units and types. Speed is the rate of change of position of an object in any direction and is a scalar quantity.

   • Units of Speed

     Speed is defined as the rate of change of distance with...

   • Law Of Motion Formula

     Define Newton’s third law of motion. Newton’s third law of...

   • Gamma Particle

     Speed Formula Physics: Difference Between Force And Power:...

   • Heat Energy Examples

     Heat transfer by radiation takes place at the speed of light...

   • Difference Between Speed And Velocity

     The difference between speed and velocity is also a very...

   • Average Speed And Average Velocity

     If the speed of the particle is high it means the particle...

3. www.merriam-webster.com › dictionary › speedSpeed Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › speed

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   Learn the various meanings and uses of the word speed as a noun and a verb, with synonyms, examples, and etymology. Find out how speed relates to motion, performance, photography, drugs, and more.

4. Videos

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5. dictionary.cambridge.org › dictionary › englishSPEED | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   SPEED definition: 1. how fast something moves: 2. very fast movement: 3. how fast something happens: . Learn more.

6. www.collinsdictionary.com › dictionary › englishSPEED definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   17 meanings: 1. the act or quality of acting or moving fast; rapidity 2. the rate at which something moves, is done, or acts 3..... Click for more definitions.

7. en.wikipedia.org › wiki › SpeedSpeed - Wikipedia

   en.wikipedia.org › wiki › Speed

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   L T−1. In kinematics, the speed (commonly referred to as v) of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a non-negative scalar quantity. [1] The average speed of an object in an interval of time is the distance travelled by the object divided ...

   Speed	M/s	Ft/s	Km/h
   Global average sea level rise	0.00000000011	0.00000000036	0.0000000004
   Approximate rate of continental drift	0.0000000013	0.0000000042	0.0000000045
   Speed of a common snail	0.001	0.003	0.004
   A brisk walk	1.7	5.5	6.1

   See full list on en.wikipedia.org

8. www.britannica.com › dictionary › speedSpeed Definition & Meaning | Britannica Dictionary

   www.britannica.com › dictionary › speed

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   Learn the various meanings and uses of the word speed, from the rate of movement or travel to the quality of being quick. Find examples, synonyms, related terms, and expressions for speed in Britannica Dictionary.

9. People also ask

   What is speed in physics?

   • Speed is one such measurable quantity that measures the ratio of the distance travelled by an object to the time required to travel that distance. In this session, let us learn in detail about speed. What is Speed? What is Speed? Speed is defined as The rate of change of position of an object in any direction.

   What Is Speed? - Definition, Formula, Unit, Types & Measurement - BYJ…

   byjus.com/physics/measurement-of-speed/

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   What does speed mean?

   • Speed is also the rate at which something travels, expressed as the number of meters in a second. [ C ] I have a ten-speed bicycle. The error can be speedily corrected. [ I ] The train sped along at over 120 miles per hour. [ I ] This year seems to be speeding by/past.

   SPEED | English meaning - Cambridge Dictionary

   dictionary.cambridge.org/dictionary/english/speed

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   What is the SI unit of speed?

   • Speed is measured as the ratio between the distance and time and the SI unit of speed is m/s. It is the change in the position of an object with respect to time. There are four types of speed: uniform speed, variable speed, average speed, and instantaneous speed.

   What Is Speed? - Definition, Formula, Unit, Types & Measurement - BYJ…

   byjus.com/physics/measurement-of-speed/

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   What is the difference between variable speed and average speed?

   • Variable speed: A object is said to be in variable speed when the object covers a different distance at equal intervals of times. Average speed: Average speed is defined as the uniform speed which is given by the ratio of total distance travelled by an object to the total time taken by the object.

   What Is Speed? - Definition, Formula, Unit, Types & Measurement - BYJ…

   byjus.com/physics/measurement-of-speed/

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   What is the difference between speed and velocity?

   • Speed denotes only how fast an object is moving, whereas velocity describes both how fast and in which direction the object is moving. If a car is said to travel at 60 km/h, its speed has been specified. However, if the car is said to move at 60 km/h to the north, its velocity has now been specified.

   Speed - Wikipedia

   en.wikipedia.org/wiki/Speed

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   What is the difference between speed and 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. Objects in motion often have variations in speed (a car might travel along a street at 50 km/h, slow to 0 km/h, and then reach 30 km/h).

   Speed - Wikipedia

   en.wikipedia.org/wiki/Speed

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10. www.oxfordlearnersdictionaries.com › definitionspeed noun - Definition, pictures, pronunciation and usage ...

    www.oxfordlearnersdictionaries.com › definition

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    Learn the meaning, pronunciation and usage of the word speed as a noun in English. Find out the different senses of speed, such as rate of movement, quality of being quick, and gear on a bicycle or car.