How many letters does the top answer for “combined with or having undergone a chemical reaction with oxygen” have?

The most common answer is oxidised (8 letters).

Crossword clue: combined with or having undergone a chemical reaction with oxygen

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

oxidised 8 letters wn-def

combined with or having undergone a chemical reaction with oxygen

oxidized 8 letters wn-def

combined with or having undergone a chemical reaction with oxygen