commutate
English
Etymology
Back-formation from commutation (in the late 19th century), as is commutator (noun) too.
Verb
commutate (third-person singular simple present commutates, present participle commutating, simple past and past participle commutated)
- (transitive, electronics) To reverse the direction of (a current).
- 2013, Freidrich Nettel, Comparison of Principal Points of Standards for Electrical Machinea & Transformers: German, British, & American Standards compared, →ISBN, page 19:
- Continuously rated machines shall be required to commutate successfully momentary loads of 150% of the Amperes corresponding to the continuous rating keeping the rheostat set for rated load excitation.
- (transitive, electronics) To convert from being or using an alternating current into being or using a direct current.
- 2009, S.K. Bhattacharya, Fundamentals Of Power Electronics, 1E, →ISBN, page 72:
- In line commutation, advantage of the a.c. supply going through zero value at every half-cycle is taken to commutate the thyristor.
- (intransitive, mathematics) To commute; to be invariant under a reversal of the positions of operands.
- 2012, J. Kittler, V.W. Fu, L.F Pau, Pattern Recognition Theory and Applications, →ISBN, page 194:
- The match of two finite line segments in 2 dimensions requires 2 translations, 1 rotation, 1 scale transformation; the order is here important, and these operators cannot commutate.
- (transitive, finance) To commute; to change one kind of payment into another, especially to convert from several installments to a single lumpsum payment.
- 2012, Stewart, Workers Compensation: Rorting the System Or System Rorted?, →ISBN:
- Ah, commutation. I knew there was something else. This is where you can commutate your weekly payments into a lump sum and be rid of the “system”.
- (transitive, law) To remove or reduce the legal obligations or restrictions on
- 1986, Brian J. Young, In Its Corporate Capacity: The Seminary of Montreal as a Business Institution 1816-1876., →ISBN, page 52:
- Specifically, the seminary was challenged by industrial millers who petitioned to build steam-powered mills and by large Montreal property holders who demanded that the crown commutate their lands.
- (transitive) To transform, especially into a reversed or opposite form.
- 2007, Jeff Rice, The Rhetoric of Cool: Composition Studies and New Media, →ISBN, page 123:
- Writers change the URIs as they compose because writers commutate and manipulate language to create a variety of rhetorical experiences that can be read at once, as overlapping, or as separate.
Related terms
- (electrical): commutator
Italian
Verb
commutate
- inflection of commutare:
- second-person plural present indicative
- second-person plural imperative
Latin
References
- “commutate”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
- commutate in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
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