Definition from Wiktionary, the free dictionary
From Latin condominium.
- (chiefly US) a building in which each unit is owned by an individual but the grounds, structure etc is owned jointly
- a unit or apartment in such a complex
- the legal tenure involved
- joint sovereignty over a territory
Usage notes 
- Often abbreviated as condo.
building in which each unit is owned by an individual, but the grounds is owned jointly
unit or apartment in such a complex
joint sovereignty over a territory