If you say that something happens or exists throughout a place, you mean that it happens or exists in all parts of that place. `Sight Savers', founded in 1950, now runs projects throughout Africa, the Caribbean and South East Asia Throughout is also an adverb. The route is well sign-posted throughout
If you say that something happens throughout a particular period of time, you mean that it happens during the whole of that period. The national tragedy of rival groups killing each other continued throughout 1990 Movie music can be made memorable because its themes are repeated throughout the film. Throughout is also an adverb. The first song, `Blue Moon', didn't go too badly except that everyone talked throughout