Definition of activity
3 : natural or normal function: such asa : a process (such as digestion) that an organism carries on or participates in by virtue of being aliveb : a similar process actually or potentially involving mental function; specifically : an educational procedure designed to stimulate learning by firsthand experience
4 : an active force
5a : a pursuit in which a person is active <business activities> <social activities>b : a form of organized, supervised, often extracurricular recreation <The camp offers hiking, swimming, and other activities.>
6 : an organizational unit for performing a specific function; also : its function or duties <the restaurant inspection activity of the health department>
Examples of activity in a sentence
The holidays always set off a lot of activity in our home.
the sexual activity of married couples
The police are now monitoring criminal activity in the area.
She gets at least 30 minutes of physical activity every day.
The instruments are used to detect volcanic activity on the island.
We planned an activity for the children.
Origin and Etymology of activity
First Known Use: 15th century
ACTIVITY Defined for English Language Learners
Definition of activity for English Language Learners
: the state of being active : behavior or actions of a particular kind
: something that is done as work or for a particular purpose
: something that is done for pleasure and that usually involves a group of people
ACTIVITY Defined for Kids
Definition of activity for Students
1 : energetic action <There is always activity around the holidays.>
2 : something done especially for relaxation or fun <Summer camp provides a variety of activities for kids.>
Medical Definition of activity
1: natural or normal function: asa: a process (as digestion) that an organism carries on or participates in by virtue of being aliveb: a similar process actually or potentially involving mental function; specifically : an educational procedure designed to stimulate learning by firsthand experience
2: the characteristic of acting chemically or of promoting a chemical reaction <the activity of a catalyst>
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