nonproliferation

Noun nonproliferation has 1 sense

• nonproliferation(n = noun.act) non-proliferation - the prevention of something increasing or spreading (especially the prevention of an increase in the number of countries possessing nuclear weapons); "they protested that the nonproliferation treaty was just a plot to maintain the hegemony of those who already had nuclear weapons"; "nuclear disarmament and nonproliferation are closely related goals"
is a kind of bar, prevention
Antonym: proliferation