Definition of "known" in English

adjective

1. Identified as a specific type; famous, renowned.

   • He was a known pickpocket.

2. Accepted, familiar, researched.

   • At the time, Einstein's theory was unknown to most other scientists.

noun

1. Any fact or situation which is known or familiar.

   • You have to tell the knowns from the unknowns.

2. (algebra) A constant or variable the value of which is already determined.

verb

1. past participle of know