Home › Words › F › fishdomfishdomfishdom means the state of being a fish, or of belonging to the world of fish; fish collectively.EtymologyFrom fish + -dom.nounThe state of being a fish, or of belonging to the world of fish; fish collectively.e.g.“In the ouananiche, fishdom has achieved its glittering perfection.” — 1922, Thomas Morris Longstreth, The Laurentians: The Hills of the Habitant, page 286:Definitions & examples from Wiktionary (CC BY-SA 3.0).