speed Meaning in the Cambridge English Dictionary
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Meaning of “speed” in the English Dictionary

"speed" in British English

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uk   us   /spiːd/

speed noun (RATE OF MOVEMENT)

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 ​milesperhour. You should lower/reduceyour speed as you ​approach a ​junction. On a ​clear, ​straightroad you can gather/pick up speed. He came off the ​road while ​driving his ​car round a ​bend at high/​breakneck speed (= very ​fast). There are speed restrictions (= ​controls on how ​fasttraffic is ​allowed to ​move) on this ​part of the ​road. an ​electricdrill with two speeds (= ​rates at which it ​turns)B2 [U] very ​fastmovement: I get a ​realthrill from speed. He put on a ​suddenburst of speed. Both ​cars were ​travelling at speed (= very ​fast) when the ​accidenthappened. [U] how ​fast something ​happens: We were ​surprised at the speed of the ​response to ​ourenquiry. It was the speed at which it all ​happened that ​shocked me. She got through her ​work with speed (= ​quickly) and ​efficiency.the speed of light/sound the ​rate at which ​light or ​soundtravels: The speed of ​light is 300 million ​metresper second. These ​planestravel at ​twice the speed of ​sound. [C] a gear noun : a ​bicycle with ten speeds a ten-speed ​bicycle [C] the ​rate at which a ​photographicfilmabsorbs or ​reacts to ​light: What speed ​film do I need for taking ​photographsindoors?shutter speed the ​length of ​time for which ​part of a ​camera is ​open to ​allowlight to ​reach the ​film when a ​photograph is being taken: a high/​lowshutter speed
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speed noun (DRUG)

[U] slang for amphetamine (= a ​drug that makes the ​mind or ​body more ​active): She was on speed at the ​time.

speedverb [I or T, usually + adv/prep]

uk   us   /spiːd/ (sped or speeded, sped or speeded)
to (​cause to) ​move, go, or ​happenfast: The ​train sped along at over 120 ​milesperhour. The ​actress then sped away/off in a ​waitingcar. We sped down the ​skislopes. This ​year is speeding by/past. Ambulances sped the ​injuredpeople (= ​moved them ​quickly) away from the ​scene. The ​best thing you can do to speed ​yourrecovery (= make it ​quicker) is to ​rest.be speeding to be ​drivingfaster than you are ​legallyallowed to do: He was caught speeding.
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Phrasal verbs
(Definition of speed from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"speed" in American English

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speednoun [C/U]

 us   /spid/
(a) ​rate at which something moves or ​happens: [C] a speed of 25 ​milesperhour [U] Both ​cars were ​traveling at high speed. [U] They came ​racing down the ​hill at ​top speed (= as ​fast as they could go). [U] The ​processing speed of my new ​computer is much ​faster. [C] This ​electricdrill has two speeds (= ​rates at which it ​turns). physics Speed is also the ​rate at which something ​travels, ​expressed as the ​number of ​meters in a second. A speed is also a gear (= ​part that ​controls the ​rate at which a ​vehicle moves): [C] I have a ten-speed ​bicycle.
adverb  us   /ˈspi·dəl·i/
The ​error can be speedily corrected.

speedverb [I/T]

 us   /spid/ (past tense and past participle sped  /sped/ or speeded)
to move, go, or ​happenfast, or to ​cause something to ​happenfast: [I] The ​trainsped along at over 120 ​milesperhour. [I] This ​yearseems to be ​speeding by/past. [T] Ambulances ​sped the ​injuredpeople (= moved them ​quickly) away from the ​scene.
Phrasal verbs
(Definition of speed from the Cambridge Academic Content Dictionary © Cambridge University Press)

"speed" in Business English

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uk   us   /spiːd/
[C or U] IT, INTERNET the ​rate at which a ​computer or an ​internetconnectionoperates and ​providesinformation: Increase the speed of your ​computer with our new ​software. How do I ​verify my computer's ​CPU speed? First you need to ​find out what your internetconnection speed is.
up to speed if you are up to speed with a ​subject or ​activity, you have all the latest ​information necessary to understand or do something well: A few days ​training on the new ​computersystem will get you up to speed. Before we ​start the ​meeting I'm going to bring you up to speed with the latest ​developments.
(Definition of speed from the Cambridge Business English Dictionary © Cambridge University Press)
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