To bring something back into use, practice, or existence after it had been removed or stopped.
From re- (again) + introduce (to bring in). Introduce comes from Latin introducere, meaning 'to lead in.' The prefix re- was added to express the idea of doing it again.
Scientists use reintroduce constantly when they bring back extinct or endangered species to their natural habitats—like wolves returning to Yellowstone in 1995, which totally transformed the ecosystem by changing how elk ate trees.
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