as ‧ phyx ‧ i ‧ ate /æsˈfɪksieɪt, əs-/ BrE AmE verb [intransitive and transitive] formal
to prevent someone from breathing normally, usually so that they die, or stop breathing SYN suffocate
—asphyxiation /æsˌfɪksiˈeɪʃ ə n, əs-/ noun [uncountable]
as ‧ phyx ‧ i ‧ ate /æsˈfɪksieɪt, əs-/ BrE AmE verb [intransitive and transitive] formal
to prevent someone from breathing normally, usually so that they die, or stop breathing SYN suffocate
—asphyxiation /æsˌfɪksiˈeɪʃ ə n, əs-/ noun [uncountable]
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012