Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
asphyxiation is a noun meaning "the condition of being deprived of oxygen (as by having breathing stopped)". It carries 2 recorded senses.
the condition of being deprived of oxygen (as by having breathing stopped)
“asphyxiation is sometimes used as a form of torture”
killing by depriving of oxygen
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 asphyxiation come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.