anion

Etymology

Borrowed from Ancient Greek ἀνιόν (anión, “(thing) going up”), neuter past participle of ἄνειμι (áneimi, “go up”), from ἀνά (aná, “up”) (see ana-) + εἶμι (eîmi, “go”). Coined by English polymath William Whewell in 1834 for Michael Faraday, who introduced it later that year.

noun

  1. A negatively charged ion.

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