Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
oxidised is an adjective meaning "combined with or having undergone a chemical reaction with oxygen". It carries one recorded sense.
combined with or having undergone a chemical reaction with oxygen
“the oxidized form of iodine”
Definitions, synonyms and semantic relations for oxidised come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .