Definitions
from Wiktionary, Creative Commons Attribution/ShareAlike License
 adj. Describing a mineral, in an igneous rock, that is bounded by its own crystal face; euhedral, idiomorphic
 adj. Describing a number whose square ends in the number itself; circular
 adj. Of or pertaining to automorphy or an automorphism
from the GNU version of the Collaborative International Dictionary of English
 adj. Patterned after one's self.
from The Century Dictionary and Cyclopedia
 Framed or conceived after the pattern or form of one's self.
 In mathematics, characterized by automorphism. See automorphism, 2.
 Same as idiomorphic.
Etymologies
Sorry, no etymologies found.
Examples

Structurally, the problem is this:  We have an algebra of observables together with an automorphic action of time evolutions on it (and possibly some symmetry groups).

I am not one to judge, but I would assume that Andy Schlafly doesn't understand what automorphic forms are, what the FL says, or have any standing to comment on a mathematical proof.

That got me slightly worried, so I asked whether they were understandable if you didn't know what an automorphic form was.

Her efforts combined tools as diverse as hyperbolic geometry, classical methods of automorphic forms and symplectic reduction to obtain results on three different mathematical questions.

OrangeMath: Supports research in algebra, including algebraic structures, general algebra, and linear algebra; number theory, including algebraic, analytic number theory, arithmetic geometry, quadratic forms, and automorphic forms; combinatorics, … Read more

Berkeley Math Prof Edward Frenkel Branches Out Into Erotic Film: University of CaliforniaBerkeley Professor Edward Frenkel is worldrenowned for his work with automorphic representations and the geometric Langlands conjecture.
jmjarmstrong commented on the word automorphic
JM wants to make a new automorphic but has lost the pattern
June 17, 2010