Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Definition of: activity

(ak·tiv′ə·tē) noun plural ·ties
1. The state or quality of being active; action; vigorous movement; active force or operation.
2. Mech. Mechanical work done in a unit of time.
3. Physics a The degree of emission from a radioactive substance in terms of observed effects. b The excitability of a gas subject to ionization.
4. Optics Capacity of a substance to rotate the plane of polarized light to left or right, measured by a polariscope. See synonyms under EXERCISE.

Most often used phrases:

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commercial activity
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brain activity
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paranormal activity
seismic activity
business activity
illegal activity

'activity' used in million biggest domains list by Alexa.com:

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'activity' used in other domains:

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Statistical data

"activity" has the frequency of use of 0.0067% on city-data.com forum

"activity" has the frequency of use of 0.0068% on en.wikipedia.org.