How many letters does the top answer for “a body which passes to the negative pole in electrolysis.” have?

The most common answer is electropositive (15 letters).

Crossword clue: a body which passes to the negative pole in electrolysis.

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

electropositive 15 letters web-def

having a positive charge