activity

US /ækˈtɪvɪti/

UK /æk'tɪvətɪ/

A1
n. (c./u.)Noun (Countable/Uncountable)An action or task, e.g. sports, washing clothes
What is your favorite weekend activity in London?
n. (c./u.)Noun (Countable/Uncountable)Something that is done by a company or organization.
The company's main activity is manufacturing car parts.
n. (c./u.)Noun (Countable/Uncountable)Actions performed on a computer system.
The system logs all user activity.
n. (c./u.)Noun (Countable/Uncountable)The level of buying and selling in a financial market.
Increased trading activity led to higher profits.
n. (c./u.)Noun (Countable/Uncountable)The rate of decay of a radioactive substance.
The activity of the sample was measured in becquerels.
n. (c./u.)Noun (Countable/Uncountable)The rate at which a chemical reaction occurs.
The chemical activity increased after adding the catalyst.

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