Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
preconditioned is an adjective meaning "having already been put into a suitable condition". It carries one recorded sense.
having already been put into a suitable condition
“a surface preconditioned to receive paint”
“customers preconditioned to buy a product”
Definitions, synonyms and semantic relations for preconditioned come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.