col ‧ lec ‧ tiv ‧ is ‧ m /kəˈlektɪvɪz ə m/ BrE AmE noun [uncountable]
[ Word Family: noun : ↑ collection , ↑ collector , ↑ collective , ↑ collectable , collectible, ↑ collectivism , ↑ collectivization ; adjective : ↑ collected , ↑ collective , ↑ collectable , collectible, ↑ collectivist ; verb : ↑ collect , ↑ collectivize ; adverb : ↑ collectively ]
a political system in which all businesses, farms etc are owned by the government
—collectivist adjective