Definitions
1.AdjectiveDescribing a mineral, in an igneous rock, that is bounded by its own crystal face; euhedral, idiomorphic.
2.AdjectiveDescribing a number whose square ends in the number itself; circular."5 is an automorphic number because 5 = 25, which ends in 5; similarly 625 = 390625, ends in 625."
3.AdjectiveOf or pertaining to automorphy or an automorphism.
4.AdjectiveMarked by automorphism, the ascription to others of one's own characteristics.