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galvanic couple

noun
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Definition of galvanic couple

: a pair of dissimilar substances (as metals) capable of acting together as an electric source when brought in contact with an electrolyte

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“Galvanic couple.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/galvanic%20couple. Accessed 9 December 2019.

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