capacity

American  

[kuh-pas-i-tee] / kəˈpæs ɪ ti /

noun

• capacities
  plural

1. the ability to receive or contain.

   This hotel has a large capacity.

2. the maximum amount or number that can be received or contained; cubic contents; volume.

   The inn is filled to capacity.

   The gasoline tank has a capacity of 20 gallons.

   Synonyms:

   amplitude

3. power of receiving impressions, knowledge, etc.; mental ability.

   the capacity to learn calculus.

   Synonyms:

   talent, endowment

4. actual or potential ability to perform, yield, or withstand.

   He has a capacity for hard work.

   The capacity of the oil well was 150 barrels a day.

   She has the capacity to go two days without sleep.

   Synonyms:

   capability, competence, adequacy, aptitude

5. quality or state of being susceptible to a given treatment or action.

   Steel has a high capacity to withstand pressure.

6. position; function; role.

   He served in the capacity of legal adviser.

7. legal qualification.

8. Electricity.

   1. capacitance.

   2. maximum possible output.

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adjective

1. reaching maximum capacity.

   a capacity audience;

   a capacity crowd.

capacity British  

/ kəˈpæsɪtɪ /

noun

1. the ability or power to contain, absorb, or hold

2. the amount that can be contained; volume

   a capacity of six gallons

3. 1. the maximum amount something can contain or absorb (esp in the phrase filled to capacity )

   2. ( as modifier )

      a capacity crowd

4. the ability to understand or learn; aptitude; capability

   he has a great capacity for Greek

5. the ability to do or produce (often in the phrase at capacity )

   the factory's output was not at capacity

6. a specified position or function

   he was employed in the capacity of manager

7. a measure of the electrical output of a piece of apparatus such as a motor, generator, or accumulator

8. electronics a former name for capacitance

9. computing

   1. the number of words or characters that can be stored in a particular storage device

   2. the range of numbers that can be processed in a register

10. the bit rate that a communication channel or other system can carry

11. legal competence

    the capacity to make a will

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Other Word Forms

Noun Inflected Forms

• capacities
  plural

Etymology

Origin of capacity

First recorded in 1375–1425; late Middle English capacite, capasite, from Middle French, from Latin capācitāt-, stem of capācitās “ability, understanding,” equivalent to capāci- (stem of capāx “confident, fit, roomy,” equivalent to cap(ere) “to take, seize” + -āx, adjective suffix) + -tās -ty ²

Explanation

Capacity describes your ability to do something or the amount something can hold. If your bird cage is at full capacity, you can't stuff one more feathered friend in there without causing birdie claustrophobia. From the Latin word capacitatem meaning “breadth, capacity,” capacity is a noun that in the simplest sense means "ability" or "capability": the capability of a room to hold a certain number of people, the ability of a law to change crime rates, your ability to pick up foreign languages. You might hear about factories working at "full capacity" — that means at full speed, producing as much as they possibly can.

Example Sentences

See Examples For:

capacity capacities

The prison - which has a maximum capacity for about 900 inmates - came under the control of another outsourcing firm Sodexo on 16 February 2023.

From BBC ● Aug. 9, 2026

It may also have had a stronger sense of smell and a greater capacity to detect touch through its large upper beak.

From Science Daily ● Aug. 9, 2026

Though the new solar capacity is a welcome addition, it has done little to ease Cuba’s chronic energy problems.

From The Wall Street Journal ● Aug. 9, 2026

“But I know talking with the staff here they’ve got a pretty good plan. I’m expected to come out of the ‘pen in some capacity.

From Los Angeles Times ● Aug. 8, 2026

She blew through special machines, had a blood sample taken to measure her capacity for absorbing oxygen, and underwent a chest exam.

From "Blink" by Malcolm Gladwell

A spokesperson for Soho Business Alliance, which represents businesses in the area, said WCC "don't want the late-night economy" and accused it of "trying to reduce the capacities in these venues".

From BBC ● Aug. 7, 2026

New York’s temporary ban applies to construction of large data centers with capacities of at least 50 megawatts.

From The Wall Street Journal ● Jul. 14, 2026

This tournament features more matches than ever before, and North American stadiums have enormous capacities to accommodate even more fans, naturally upping the consumption of this World Cup.

From BBC ● Jul. 6, 2026

VW, in the process of slashing thousands of jobs as profits and sales suffer, is seeking to reduce global production capacities by around one million vehicles -- half in China and half elsewhere, particularly Europe.

From Barron's ● Jun. 7, 2026

In the nineteenth century, Helmholtz and Donders had begun trying to measure the capacities of the human brain.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel

Related Words

• capability
• competence
• efficiency
• facility
• power
• readiness
• skill
• strength
• talent