prodom en · NOUN
Etymology
From pro (“professional”) + -dom, modelled after fandom.
Meanings
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(slang, uncountable) The realm of professional writers, as opposed to fandom.
You won't find a finer fanzine, nor one that will get you behind the scenes in fandom and prodom quicker.
1950 March, Rog Phillips, “The Club House”, in Amazing Stories, volume 24, number 3, page 186: