emporium (n.) Look up emporium at Dictionary.com
1580s, from Latin emporium, from Greek emporion "trading place, market," from emporos "merchant," originally "traveler," from en "in" (see en- (2)) + poros "passage, voyage," related to peirein "to pass through" (see port (n.1)). Greek emporos in the "merchant" sense meant especially "one who trades on a large scale, usually but not necessarily by sea" [Buck], as opposed to kapelos "local retail dealer, shopkeeper."