Pronunciation: (u-bē'lē-un, u-bēl'yun), [key]
1. of or pertaining to Niels Henrik Abel or his theorems.
2. pertaining to an algebraic system in which an operation is commutative: an Abelian group.
3. pertaining to such an operation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.