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English definition of “reinforce”

reinforce

verb [T]  /ˌri·ɪnˈfɔrs, -ˈfoʊrs/ us  
to make something stronger, usually by adding more material or another piece: Building codes in California required that steel rods be used to reinforce cinder-block construction. Something that reinforces an idea or opinion provides proof or support: But let me just cite one other fact to reinforce what you’re saying. To reinforce an army is to provide it with more soldiers or weapons.
(Definition of reinforce from the Cambridge Academic Content Dictionary © Cambridge University Press)
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