English Reference
noun · adjective

capacity

n. · adj.
US /kəˈpæsəti/ UK /kəpˈæsɪti/ ca·pac·i·ty UK spelling capacities

  1. 01 B2 Upper Intermediate

    n.the total amount that a container or space can hold.

    n.the maximum amount or number that can be contained or accommodated.

    Simple

    The stadium was filled to capacity for the final game of the season.

    In context

    The fuel tank has a capacity of fifty litres, which is sufficient for most long-distance journeys without frequent stops.

  2. 02 B2 Upper Intermediate Academic

    n.your ability to do a specific task or understand an idea.

    n.the power or ability to generate, receive, or exhibit a specific quality or perform a task.

    Simple

    She has a great capacity for hard work and never seems to get tired.

    In context

    The human brain has an incredible capacity for processing complex visual information in a fraction of a second.

  3. 03 B2 Upper Intermediate Formal

    n.a particular job or position that someone has.

    n.a specific role, function, or position in which a person acts.

    Simple

    He attended the meeting in his capacity as the company's legal advisor.

    In context

    She was acting in a private capacity when she made those comments, so they do not reflect the official policy of the department.

    Usage

    Often used with the preposition 'in'.

  4. 04 C1 Advanced AcademicTechnical

    n.the maximum amount that a factory or machine can produce.

    n.the maximum output that an industrial plant or economy can maintain.

    Simple

    The factory is currently operating at full capacity to meet the high demand.

    In context

    Economists are concerned that the industry is reaching its productive capacity, which could lead to inflationary pressures if demand continues to rise.

  5. 05 C2 Proficiency FormalTechnical Law

    n.the legal right or mental ability to make your own decisions.

    n.the legal qualification or mental competence to perform a specific act or enter into a contract.

    Simple

    The court had to decide if the elderly man had the mental capacity to sign the will.

    In context

    The defendant's legal capacity was questioned by the prosecution, leading to a lengthy psychiatric evaluation before the trial could proceed.

  6. 06 C1 Advanced Formal

    adj.filling all the available space.

    adj.occupying the total available space or reaching the maximum limit; non-gradable.

    Simple

    The singer performed to a capacity crowd at the local theatre.

    In context

    The venue hosted a capacity audience, with every seat occupied and standing room only at the back of the hall.

Usage basic capacity · broad capacity · capacity limit

Ukraine has destroyed almost a third of Russia’s refining capacity this year with its long-range drones.

Al Jazeera· 14 Aug 2026

Even when patients are found, capacity to treat them is running short.

UN News· 13 Aug 2026

From Middle English capacite, from Old French capacite, from Latin capācitās, from capāx (“able to hold much”), from capiō (“to hold, to contain, to take, to understand”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin capācitās
Level B2 · Upper Intermediate
Frequency Common
Updated