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ONAD→abelian

abelian

Flag: gbEnglishOxford New American Dictionary
abelian /əˈbēlyən, əˈbiljən /
▸ adjective Mathematics (of a group) having members related by a commutative operation (e.g., a ×b = b ×a).
– ORIGIN mid 19th century : from N. H. Abel (see Abel, Niels Henrik) + -ian.