Dictionary.com/noetic:

noetic (n-tk) adjective

Of, relating to, originating in, or apprehended by the intellect.

[Greek notikos, from nosis, understanding. See noesis.]

Source: The American Heritage® Dictionary of the English Language, Fourth Editio
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.