Speed Definition & Meaning | Britannica Dictionary (2024)

1 speed

/ˈspiːd/

noun

plural

speeds

1 speed

/ˈspiːd/

noun

plural

speeds

Britannica Dictionary definition of SPEED

1

:

the rate at which someone or something moves or travels

[noncount]

  • The trucks gain/gather speed as they drive down the hill. = The trucks pick up speed as they drive down the hill. [=the trucks go faster as they drive down the hill]

  • This instrument measures wind speed.

  • He was running at full/top speed. [=as fast as possible]

  • The machine was operating at high/medium/low speed.

  • traveling at nearly the speed of light/sound

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

[count]

  • Under the right conditions the car can reach speeds over 200 miles an hour.

  • The vehicle maintained a speed of 40 miles per hour.

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

2

:

the rate at which something happens or is done

[noncount]

  • The work was done with remarkable speed.

  • They ate their lunch at lightning speed. [=extremely quickly]

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

[count]

  • This computer works at a much faster processing speed than my old one.

  • He types at a speed of about 50 words per minute. = His typing speed is about 50 words per minute.

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

3

[noncount]

:

the quality of being quick

  • The machine chops up tree branches and leaves with speed and ease.

4

[count]

photography

a

:

a measurement that indicates how quickly film reacts to light and that is expressed as a number (such as 100 or 200)

  • 200 speed film

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

b

:

the time during which a camera's shutter is open

  • faster/slower shutter speeds

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

5

[count]

:

a gear in a vehicle or bicycle

  • a three-speed bicycle

  • Her old car has four speeds.

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

6

[noncount]

informal

:

an illegal drug that makes a person feel more excited and full of energy

  • He was high on speed.

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

at speed

chiefly British

:

very quickly

:

at a fast speed

  • He ran at speed out of the room.

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

full speed ahead

see 1full

up to speed

:

having the latest information about something

  • Everyone here is up to speed.

  • Let me bring you up to speed on our plans. [=let me tell you about the changes in our plans]

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

:

having the knowledge that is needed to do or understand something

  • It will take some time for the new secretary to get up to speed. [=to learn the job]

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

2 speed

/ˈspiːd/

verb

speeds;

sped

/ˈspɛd/

or

speeded;

speeding

2 speed

/ˈspiːd/

verb

speeds;

sped

/ˈspɛd/

or

speeded;

speeding

Britannica Dictionary definition of SPEED

1

always followed by an adverb or preposition,

[no object]

:

to move fast

  • A group of kids sped past us on their bikes.

  • They jumped in the car and sped/speeded away.

  • A car was speeding down/up the street.

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

2

always followed by an adverb or preposition,

[+ object]

:

to move (someone or something) somewhere very quickly

  • An ambulance sped her to the hospital.

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

3

[no object]

:

to drive faster than the legal speed limit

  • I got pulled over twice last month because I was speeding on the highway.

  • Don't speed.

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

4

[+ object]

somewhat formal

:

to cause (an action, movement, process, etc.) to happen faster

  • We kept the plants under artificial lights at night to speed their growth.

  • Is there anything we can do to speed the process (along)?

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

speed up

[phrasal verb]

speed up

or

speed up (something or someone)

or

speed (something or someone) up

:

to become faster or to make (something or someone) faster

  • I hate it when cars speed up [=accelerate] while you're trying to pass them.

  • The work has been slow so far but it should speed up soon.

  • They add another chemical to the photo developer to speed up the process.

  • I'm afraid there's nothing you can do to speed things up.

  • They're working too slowly. How can we speed them up?

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

see also speedup

I'm an enthusiast with a deep understanding of the concept of speed. Let's dive into the various facets covered in the article:

1. Speed as a Noun:

  • Definition 1: The rate at which someone or something moves. For example, trucks gaining speed downhill or a machine operating at high speed.
  • Definition 2: The rate at which something happens or is done. It can refer to the quick completion of work or eating lunch at lightning speed.
  • Definition 3: The quality of being quick, as seen in the efficiency of a machine chopping up tree branches with speed and ease.
  • Definition 4: In photography, a measurement indicating how quickly film reacts to light or the time during which a camera's shutter is open.

2. Speed as a Countable Noun:

  • Definition 5: Refers to gears in vehicles or bicycles, such as a three-speed bicycle or a car with four speeds.

  • Definition 6: Informally, speed can also mean an illegal drug that induces excitement and energy.

  • Phrase: "At speed" (chiefly British) means very quickly, as in someone running at speed out of a room.

  • Phrase: "Up to speed" means having the latest information or knowledge about something.

3. Speed as a Verb:

  • Definition 1: To move fast, as in a group of kids speeding past on their bikes.

  • Definition 2: To move someone or something somewhere very quickly, like an ambulance speeding to the hospital.

  • Definition 3: To drive faster than the legal speed limit.

  • Definition 4: Somewhat formally, to cause an action, movement, process, etc., to happen faster.

  • Phrasal Verb: "Speed up" means to become faster or to make something or someone faster. For instance, cars accelerating or efforts to speed up a process.

This comprehensive understanding of speed encompasses its physical aspects, temporal dimensions, and even its informal usage in different contexts. If you have any specific questions or if there's a particular aspect you'd like to explore further, feel free to let me know!

Speed Definition & Meaning | Britannica Dictionary (2024)
Top Articles
Latest Posts
Article information

Author: Rueben Jacobs

Last Updated:

Views: 6524

Rating: 4.7 / 5 (57 voted)

Reviews: 80% of readers found this page helpful

Author information

Name: Rueben Jacobs

Birthday: 1999-03-14

Address: 951 Caterina Walk, Schambergerside, CA 67667-0896

Phone: +6881806848632

Job: Internal Education Planner

Hobby: Candle making, Cabaret, Poi, Gambling, Rock climbing, Wood carving, Computer programming

Introduction: My name is Rueben Jacobs, I am a cooperative, beautiful, kind, comfortable, glamorous, open, magnificent person who loves writing and wants to share my knowledge and understanding with you.