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The following statistics are based on the British National Corpus, so they are representative for the British English.

Usage statistics for the noun activity:

spoken English20.38%written English79.62% imaginative writing10.82%informational writing89.18%

Distribution of usage frequency for the most common synonyms of the noun activity:

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Definition of the noun activity

What does activity mean as a name of something?

Activity is one of the top 1000 most common nouns. It is used mostly in informational writing, being one of the top 1000 most common nouns in informational written English.

noun - plural: activities

  1. any specific behavior
  2. the state of being active
    • example: his sphere of activity
    • lexical domain: States - nouns denoting stable states of affairs
    • synonyms of activity: action / activeness
    • antonym of activity: inactivity
    • more generic word: state = the way something is with respect to its main attributes
    • more specific words:
      • agency = the state of being in action or exerting power
      • busyness / hum = the state of being or appearing to be actively engaged in an activity
      • behaviour / behavior = the action or reaction of something (as a machine or substance) under specified circumstances
      • extravasation / eructation / eruption = pouring out fumes or lava
      • operation = the state of being in effect or being operative
      • overdrive = the state of high or excessive activity or productivity or concentration
      • play = a state in which action is feasible
      • swing = a state of steady vigorous action that is characteristic of an activity
    • attribute: active = erupting or liable to erupt
  3. an organic process that takes place in the body
  4. (chemistry) the capacity of a substance to take part in a chemical reaction
  5. a process existing in or produced by nature (rather than by the intent of human beings)
    • example: volcanic activity
    • lexical domain: Natural Processes - nouns denoting natural processes
    • synonyms of activity: action / natural action / natural process
    • more generic terms: physical process / process = a sustained phenomenon or one marked by gradual changes through a series of states
    • more specific terms:
      • radiation = the spread of a group of organisms into new habitats
      • absorption = the process in which incident radiated energy is retained without reflection or transmission on passing through a medium
      • acidification = the process of becoming acid or being converted into an acid
      • adiabatic process = any process that occurs without gain or loss of heat
      • aeration = the process of exposing to air
      • antiredeposition = the process of preventing redeposition
      • capture = any process in which an atomic or nuclear system acquires an additional particle
      • capture = a process whereby a star or planet holds an object in its gravitational field
      • centrifugation = the process of separating substances of different densities by the use of a centrifuge
      • chemical process / chemical action / chemical change = any process determined by the atomic and molecular composition and structure of the substances involved
      • chromatography = a process used for separating mixtures by virtue of differences in absorbency
      • concretion = the formation of stonelike objects within a body organ
      • condensation = the process of changing from a gaseous to a liquid or solid state
      • convection = the vertical movement of heat or other properties by massive motion within the atmosphere
      • coagulation / clotting / curdling = the process of forming semisolid lumps in a liquid
      • decay = the process of gradually becoming inferior
      • demagnetisation / demagnetization = the process of removing magnetization
      • desorption = changing from an adsorbed state on a surface to a gaseous or liquid state
      • diffusion = the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration
      • disintegration / dissolution = separation into component parts
      • distillation / distillment = the process of purifying a liquid by boiling it and condensing its vapors
      • drift = the gradual departure from an intended course due to external influences
      • effervescence = the process of bubbling as gas escapes
      • electrophoresis / dielectrolysis / cataphoresis / ionophoresis = the motion of charged particles in a colloid under the influence of an electric field
      • establishment / ecesis = the process by which a plant or animal becomes established in a new habitat
      • extinction = the reduction of the intensity of radiation as a consequence of absorption and radiation
      • extraction = the process of obtaining something from a mixture or compound by chemical or physical or mechanical means
      • feedback = the process in which part of the output of a system is returned to its input in order to regulate its further output
      • filtration = the process whereby fluids pass through a filter or a filtering medium
      • flocculation = the process of flocculating
      • flow = any uninterrupted stream or discharge
      • formation = natural process that causes something to form
      • fossilisation / fossilization = the process of fossilizing a plant or animal that existed in some earlier age
      • geological process / geologic process = a natural process whereby geological features are modified
      • solidification / solidifying / hardening / curing / set = the process of becoming hard or solid by cooling or drying or crystallization
      • inactivation = the process of rendering inactive
      • ion exchange = a process in which ions are exchanged between a solution and an insoluble (usually resinous) solid
      • ionisation / ionization = the process of ionizing
      • leaching / leach = the process of leaching
      • magnetic induction / magnetisation / magnetization = the process that makes a substance magnetic
      • materialisation / materialization = the process of coming into being
      • nuclear reaction = a process that alters the energy or structure or composition of atomic nuclei
      • opacification = the process of becoming cloudy or opaque
      • oscillation = the process of oscillating between states
      • oxygenation = the process of providing or combining or treating with oxygen
      • pair production / pair formation / pair creation = the transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus
      • phase transition / physical change / phase change / state change = a change from one state (solid or liquid or gas) to another without a change in chemical composition
      • precession of the equinoxes = a slow westward shift of the equinoxes along the plane of the ecliptic caused by precession of the Earth's axis of rotation
      • release = a process that liberates or discharges something
      • saltation = the leaping movement of sand or soil particles as they are transported in a fluid medium over an uneven surface
      • scattering = the physical process in which particles are deflected haphazardly as a result of collisions
      • sericulture = raising silkworms in order to obtain raw silk
      • sink = a process that acts to absorb or remove energy or a substance from a system
      • soakage / soaking / soak = the process of becoming softened and saturated as a consequence of being immersed in water
      • softening = the process of becoming softer
      • sorption = the process in which one substance takes up or holds another
      • source = a process by which energy or a substance enters a system
      • rigidification / rigidifying / stiffening = the process of becoming stiff or rigid
      • stimulation = the effect of a stimulus
      • ecological succession / succession = the gradual and orderly process of change in an ecosystem brought about by the progressive replacement of one community by another until a stable climax is established
      • survival of the fittest / natural selection / selection / survival = a natural process resulting in the evolution of organisms best adapted to the environment
      • synergism / synergy = the working together of two things (muscles or drugs for example) to produce an effect greater than the sum of their individual effects
      • temperature change = a process whereby the degree of hotness of a body (or medium) changes
      • transduction = the process whereby a transducer accepts energy in one form and gives back related energy in a different form
      • transpiration = the passage of gases through fine tubes because of differences in pressure or temperature
      • vitrification = the process of becoming vitreous
  6. the trait of being active; moving or acting rapidly and energetically

Alternative definition of the noun activity


  1. The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities.
  2. something done as an action or a movement
  3. something done for pleasure or entertainment, especially one involving movement or an excursion.
  4. Use (of internet, playstation, bank account etc.)

Specialised definition of the noun activity

Glossary of sports

something that someone does (2006. Dictionary of Sport and Exercise Science. A&C Black Publishers Ltd)

the characteristic behaviour of a chemical (2006. Dictionary of Sport and Exercise Science. A&C Black Publishers Ltd)


"Activity" is a composition.


  1. Activity a.k.a. Thermodynamic activity: In chemical thermodynamics, activity is a measure of the “effective concentration” of a species in a mixture, in the sense that the species' chemical potential depends on the activity of a real solution in the same way that it would depend on concentration for an ideal solution.
  2. Activity: An activity in Unified Modeling Language is a major task that must take place in order to fulfill an operation contract.

Phrases with Activity

  1. Activity Trap
  2. sex activity
  3. human activity
  4. sexual activity
  5. social activity
  6. Hive of Activity
  7. optical activity
  8. sensory activity
  9. business activity
  10. creative activity
  11. catalytic activity
  12. offensive activity
  13. commercial activity
  14. government activity
  15. spare-time activity
  16. subversive activity
  17. educational activity
  18. bond-trading activity
  19. intelligence activity
  20. agglutinating activity

View more phrases with the word Activity in thesaurus!

Printed dictionaries and other books with definitions for Activity

Click on a title to look inside that book (if available):

Google previewComputer Safety, Reliability, and Security (2015)

34th International Conference, SAFECOMP 2015, Delft, The Netherlands, September 23-25, 2015, Proceedings by Floor Koornneef, Coen van Gulijk

For example for technical safety requirements of category “ SafetyRelatedFunction”, we propose the following V&V activities: – ≪HW SW DerivationV aV ≫: The engineering activity is the derivation of detailed HW and SW requirements for ...

Google previewStrategic Organizational Diagnosis and Design (2013)

The Dynamics of Fit by Richard M. Burton, Borge Obel

A firm whose primary activity is the conversion of raw materials, parts and subassemblies into finished products for use by a customer. The manufacturing transformation requires equipment and personnel. It may be either capital or labor ...

Google previewThe Code of Federal Regulations of the United States of America (1994)

Freight Train Cars Subactivity— (XX- 22-XX) (2) Freight Train Cars subactivity of the Equipment activity refers to repairing, maintaining, leasing, renting, depreciating, and retiring freight train cars. It includes all natural expense object ...

Google previewDraft Toxicological Profile for Cobalt (2001)

The activity is a measure of the quantity of radioactive material.

Google previewNutritional Epidemiology (2013)

by Walter Willett

hysical activity is the most important determinant of between-person variation in total energy expenditure (see Chapter 11) after...

Physical activity is a complex behavior that includes multiple dimensions such as type, duration, frequency, and intensity.

Google previewHome-Based Business For Dummies (2011)

by Paul Edwards, Sarah Edwards, Peter Economy

whether a particular activity is a business or a hobby. In fact, a person's knowledge or effort in managing a successful enterprise has been considered by the courts in several cases. Similarly, if the home-based busi- nessperson has retained ...

Google previewTheatre of Exile (2015)

by Horacio Czertok

The activity is the reason for the antagonist being there, and not the exercise as such,

Google previewDatabase and Expert Systems Applications (2012)

Proceedings of the International Conference in Vienna, Austria, 1990 by Min A Tjoa, Roland Wagner

relations -- employee is a relation project is a relation project-manager is a relation activity is a relation subproject is a...

Google previewExercise Therapy (2009)

Prevention and Treatment of Disease by John Gormley, Juliette Hussey

One of the greatest obstacles to validating field methods of assessing habitual physical activity is a lack of an adequate criterion to which techniques may be compared. Doubly labelled water (DLW) is considered the gold standard for the ...

Google preview2008 Physical Activity Guidelines for Americans (2008)

Be Active, Healthy, and Happy!

Vigorous-intensity activity is a 7 or 8. For More Information See Appendix 1 for more information on using absolute or relative intensity. The Guidelines for adults refer to absolute intensity because most studies demonstrating lower risks of ...

Google previewTeaching ESL/EFL Reading and Writing (2008)

by I.S.P. Nation

The first condition needed for a fluency development activity is that the learners should be focused on the message. In repeated reading this condi- tion is met by having a listener. The reader is trying to communicate the message of the text to ...

Google previewThe Possibility of Politics

A Study in the Political Economy of the Welfare State by Stein Ringen

The argument starts from the simple and reasonable assumption that a life of activity is a good life; it is believed to be what people seek and to reflect a dignified and rewarding existence. It is good if people are active and care about each other ...

Google previewEncyclopedia of Creativity (1999)

by Mark A. Runco, Steven R. Pritzker

umane creativity includes any creative activity that promotes humane values and goals, humane communication ...

Google previewThe Encyclopaedia of Sports Medicine: An IOC Medical Commission Publication, Genetic and Molecular Aspects of Sports Performance (2011)

by Claude Bouchard, Eric P. Hoffman


Google previewDictionary of Project Management

Predecessor An activity that must be completed (or be partially completed) before a specified activity can begin is called The combination of all predecessor a predecessor. and successor relationships among the project activities forms a ...

Google previewThe New Encyclopedia of Group Activities, CD-ROM Included (2011)

by Lorraine L. Ukens

Introduction xxix Debriefing the Activity Having the group reflect on its experiences is a critical aspect of experiential learning. It is the point at which the experience is connected to real-world application. When using games and entertaining ...

Online dictionaries and encyclopedias with entries for Activity

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Photos about Activity

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If you need related images for an article or a report, you can download stock photos:
Small photo of Find your freedom! Small girl jump with skate board isolated on white. Child skater smile with longboard. Skateboard kid in pink jumpsuit. Sport activity and energy. Childhood and active games.Small photo of Skateboard kid in casual wear on violet background. Girl skater smiling with longboard. Small child smile with skate board. Sport activity and energy. Childhood lifestyle and active games.Small photo of Childhood and active games. Small girl smile with skate board on violet background. Carefree day. Child skater smiling with longboard. Skateboard kid in pink jumpsuit. Sport activity and energy.Small photo of Group of young sporty people standing at wall. Students taking a rest from fitness activity, time to recover strength, waiting for a lesson to start in loft studio, close up. Healthy lifestyle conceptSmall photo of Young fit girl athlete running on a sunset along seaside on running path in summer. Wearing sportswear. Activity and healthy lifestyle in a city conceptSmall photo of Active sporty kid in helmet is doing activity in adventure park with all climbing equipment. Active children climb on the trees and having fun outdoors. Summer camp.Small photo of Active sporty kid in helmet is doing activity in adventure park with all climbing equipment. Active children climb on the trees and having fun outdoors. Summer camp. More...

Video language resources about Activity

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View more videos about optical activity and Business Activity.

See also the pronunciation examples of Activity!

Sign language

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Quotes about Activity

Creativity is merely a plus name for regular activity . . . any activity becomes creative when the doer cares about dong it right, or better. (John Updike)
more quotes about activity...

Scrabble value of A1C3T1I1V4I1T1Y4

The value of this 8-letter word is 16 points. It is included in the first and second editions of the Official Scrabble Players Dictionary.

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