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English definition of “zero in on sth/sb”

zero in on sth/sb

phrasal verb with zero     /ˈzɪə.rəʊ/ US  /ˈzɪr.oʊ/ verb (present tense zeroes)
to aim a weapon directly at something or someone: Modern military aircraft use computers to help them zero in on their targets.Aiming and aimHandguns and rifles
(Definition of zero in on sth/sb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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