Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
bioattack is a noun meaning "the use of bacteria or viruses or toxins to destroy men and animals or food". It carries one recorded sense.
the use of bacteria or viruses or toxins to destroy men and animals or food
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for bioattack come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.