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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Dictionary: Definition of "activity" Thesaurus: All synonyms and antonyms for "activity" Spanish Central: Translation of "activity" Nglish: Translation of "activity" for Spanish speakers Britannica English: Translation of "activity" for Arabic speakers Britannica.com: Encyclopedia article about "activity"
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