Definitions for knownnoʊn
Random House Webster's College Dictionary
Ref: pp. of know. 1
(n.)a known quantity.
apprehended with certainty
"a known quantity"; "the limits of the known world"; "a musician known throughout the world"; "a known criminal"
Kernerman English Learner's Dictionary
identified or known about
There is no known cause for this condition..; He had a known history of violence.
the past participle of "know"
In algebra, a variable or constant whose value is already determined.
Any fact or situation which is well-researched or familiar.
Someone or something that many people know about, renowned, famous.
Origin: From the , from past participle cnawen.