Looking at the entry for "emission" in the #NewIrishEnglishDictionary at focloir.ie, I see the Irish word "astaíocht" (the preposition "as" means "out") and the the expected focus on gases in the examples.
Back-checking the entry for "astaíocht" in the 1977 #FoclóirGaeilgeBéarla at teanglann.ie, we see that, back then, "emission" was a term associated with W(ireless) Tel(elgraphy?).
#changingtimes #newirishenglishdictionary #focloirgaeilgebearla #gaeilge #focloir #teanglann #ireland #mastodaoine