Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
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No pronunciation record was provided for this word.
noun
An electrical switch, in a generator or motor, that periodically reverses the direction of an electric current.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: rheotrope, electrepeter
Antonyms: none provided
noun
A binary map in a given group G, given by [g, h] = ghg−1h−1, where g and h are elements of G, which yields the group's identity if and only if the group operation commutes for g and h.
Definition source: English Wiktionary via Wiktextract
Topics: group-theory, mathematics, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
A binary map in a given ring R, given by [a, b] = ab − ba, where a and b are elements of R, which yields the ring's zero element if and only if the multiplication operation commutes for a and b.
Definition source: English Wiktionary via Wiktextract
Qualifier: ring theory
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
switch for reversing the direction of an electric current
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: switch, electric switch, electrical switch
History
Back-formation from commutation (in the late 19th century), as is commutate (verb) too.
Across languages
15 source translations are retained for this English entry.
