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English definition of “zero in (on something/someone)”

zero in (on something/someone)

 /ˈzɪr·oʊ, ˈzi·roʊ/ (present tense zeroes, present participle zeroing, past tense and past participle zeroed) phrasal verb with zero verb
to direct all your attention to one thing: We’ve zeroed in on the real problem – we don’t save enough money. If you zero in a weapon, you aim it directly at something you want to hit: Computers help the pilots to zero in on their targets.
(Definition of zero in (on something/someone) from the Cambridge Academic Content Dictionary © Cambridge University Press)

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