homopolar

adjective
ho·​mo·​po·​lar | \ ˌhō-mə-ˈpō-lər How to pronounce homopolar (audio) , ˌhä-\

Definition of homopolar

1 of a motor or generator : using or producing direct current without the use of commutators
2 : of or relating to a union of atoms of like polarity : nonionic

First Known Use of homopolar

1896, in the meaning defined at sense 1

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The first known use of homopolar was in 1896

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