asphyxiatorn.
/asˈfɪksɪeɪtə/ An asphyxiating agent; an apparatus for extinguishing fire by the agency of carbonic acid gas, etc.
Π
1882 Standard 31 Oct. 5/3 Portable fire engines or asphyxiators on every car.
This entry has not yet been fully updated (first published 1885; most recently modified version published online December 2018).
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n.1882