From The Collaborative International Dictionary of English v.0.48 :
Cognize \Cog"nize\, v. t. [Cf. Cognizant, Recognize.]
To know or perceive; to recognize.
[1913 Webster]
The reasoning faculty can deal with no facts until they
are cognized by it. --H. Spencer.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
cognize
v 1: be cognizant or aware of a fact or a specific piece of
information; possess knowledge or information about; "I
know that the President lied to the people"; "I want to
know who is winning the game!"; "I know it's time" [syn:
know, cognize, cognise] [ant: ignore]