demos UK /ˈdiːmɒs/US /ˈdiˌmɑs/ noun2 •The ordinary citizens of an ancient Greek city-state; hence, the common populace of a state or district (especially a democratic one); the people.When the demos took charge, law and order inevitably collapsed, or so they concluded. — 2007 •An ancient subdivision of Attica; (now also) a Greek municipality, an administrative area covering a city or several villages together. formsdemoi · demoses