activity

plural activities

1. uncountableThe state or quality of being active; activeness.

   Pit row was abuzz with activity.

   1 more example

   For quotations using this term, see Citations:activity.

2. countableSomething done as an action or a movement.

   The activity for the morning was a walk to the store.

   1 more example

   There has been a controversy in this sphere between economic materialism and the version of Marxism which ascribes an active and independent historical function to 'subjective' factors, i.e. the workings of the intellect and freely directed political activity.

   1978 [1976], Leszek Kołakowski, translated by P[aul] S[teven] Falla, Main Currents of Marxism, volume I: The Founders, Oxford: Clarendon Press, translation of Główne nurty marksizmu: powstanie (in Polish), →ISBN, →OCLC, page 158

   Synonyms: pursuit, undertaking

3. countableSomething done for pleasure or entertainment, especially one involving movement or an excursion.

   Quilting can be an enjoyable activity.

   2 more examples

   An increasing number of sports activities are on offer at the university.

   Like most human activities, ballooning has sponsored heroes and hucksters and a good deal in between. For every dedicated scientist patiently recording atmospheric pressure and wind speed while shivering at high altitudes, there is a carnival barker with a bevy of pretty girls willing to dangle from a basket or parachute down to earth.

   2013 June 7, David Simpson, “Fantasy of navigation”, in The Guardian Weekly, volume 188, number 26, page 36

4. countableuncountablegrammarThe lexical aspect (aktionsart) of verbs or predicates that change over time and have no natural end point.

   […]distinctions among states of affairs are reflected to a striking degree in distinctions among Aktionsart types. That is, situations are expressed by state verbs or predicates, events by achievement verbs or predicates, and actions by activity verbs or predicates.

   1997, Robert van Valin, Randy LaPolla, Syntax, page 92

5. countableuncountablenatural sciencesThe number of radioactive decays per unit time. Unit for it: becquerel or curie
6. countableuncountableThe property of substances to react with other substances