su·​per·​ac·​tiv·​ity ˌsü-pər-ak-ˈti-və-tē How to pronounce superactivity (audio)
plural superactivities
: activity that exceeds what is usual or expected
superactivity in the cerebral cortex
enzymatic superactivity
Artistically, Twain had to make the town seem dull so that it could serve as a foil for Tom's superactivitiesJohn C. Gerber

Word History

First Known Use

1835, in the meaning defined above

Time Traveler
The first known use of superactivity was in 1835

Dictionary Entries Near superactivity

Cite this Entry

“Superactivity.” Dictionary, Merriam-Webster, Accessed 1 Oct. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!