Counterion

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any ion of opposite charge to another in a solution or other electrochemical system

Synonyms

All synonyms
gegeniongegenion

Antonyms

All antonyms
coion

Etymology

From counter- + ion.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.