1. Philosophy.
   1. Concerned with the a priori or intuitive basis of knowledge as independent of experience.
   2. Asserting a fundamental irrationality or supernatural element in experience.
2. Surpassing all others; superior.
3. Beyond common thought or experience; mystical or supernatural.
4. Mathematics. Of or relating to a real or complex number that is not the root of any polynomial that has positive degree and rational coefficients.

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.