megagallery
Etymology
From mega- + gallery.
megagallery means A very large commercial art gallery that operates globally. Lexicurio rates it Sui generis — a strength score of 95 out of 100.
noun
- A very large commercial art gallery that operates globally.“That will place it level with the 19 currently run by Gagosian, best known of the world's four “megagalleries”.”