Minnobia was an inhabited planet whose population was engaged in a war with the Vek in 2373.
In that year, Quark claimed that Hagath and Gaila's supplier had sold every stockpile of a mutagenic retrovirus to Minnobia to be used against the Vek. (DS9: "Business as Usual")
This planet was only mentioned in dialogue.
In the pronunciation guide for this script, there was a listing for Minnobeans. This might be what the native population of this world was called.