activity
Americannoun
plural
activities-
the state or quality of being active.
There was not much activity in the stock market today. He doesn't have enough physical activity in his life.
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a specific deed, action, function, or sphere of action.
social activities.
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work, especially in elementary grades at school, that involves direct experience by the student rather than textbook study.
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energetic activity; animation; liveliness.
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a use of energy or force; an active movement or operation.
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normal mental or bodily power, function, or process.
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Physical Chemistry. the capacity of a substance to react, corrected for the loss of reactivity due to the interaction of its constituents.
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Physics.
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the number of atoms of a radioactive substance that disintegrate per unit of time, usually expressed in curies.
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an organizational unit or the function it performs.
noun
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the state or quality of being active
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lively action or movement
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any specific deed, action, pursuit, etc
recreational activities
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the number of disintegrations of a radioactive substance in a given unit of time, usually expressed in curies or disintegrations per second
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the capacity of a substance to undergo chemical change
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the effective concentration of a substance in a chemical system. The absolute activity of a substance B, λ B , is defined as exp (μ B RT ) where μ B is the chemical potential
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Other Word Forms
- nonactivity noun
- preactivity noun
- superactivity noun
Etymology
Origin of activity
First recorded in 1520–30; from Middle French or directly from Medieval Latin āctīvitās; active, -ity
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A large enough move could slow activity and cool demand-driven inflation.
From Barron's
Abel wrote in his letter that “equity investments are fundamental to our capital allocation activities.”
From Barron's
The government of Qatar, one of the world’s biggest exporters of liquefied natural gas, urged shipowners to suspend maritime activities.
In a medical setting, doctors could temporarily pause gene activity if a patient experiences stress or side effects from treatment, then restart it later when conditions improve.
From Science Daily
“This concentrated approach will continue, with limited activity in these holdings, though we may significantly adjust a holding if we see fundamental changes in its long-term economic prospects,” Abel wrote.
From MarketWatch
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
