One of the mysteries of the English language finally explained.
1A person engaged in producing or supplying gas; a gas fitter.
2Theatre. A person responsible for lighting the stage and creating effects with gaslight; = "gasman". Now historical and rare.
Early 19th century; earliest use found in Literary Gazette. From gas + engineer.
gas engineer/ˈɡas ɛn(d)ʒɪˌnɪə/
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