Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
disconfirming is an adjective meaning "not indicating the presence of microorganisms or disease or a specific condition". It carries 2 recorded senses.
not indicating the presence of microorganisms or disease or a specific condition
“the HIV test was negative”
medicine
establishing as invalid or untrue
Definitions, synonyms and semantic relations for disconfirming come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.