say it: suhf-uh-KAY-shuhn
suffocation is a noun meaning "killing by depriving of oxygen". It carries 2 recorded senses.
killing by depriving of oxygen
the condition of being deprived of oxygen (as by having breathing stopped)
“asphyxiation is sometimes used as a form of torture”
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 suffocation come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.