zero in on

phrasal verb
zeroed in on; zeroing in on; zeroes in on

Definition of zero in on

1 : to direct all of one's attention to (someone or something) Scientists are hoping to zero in on a cure.
2 : to aim something (such as a gun or camera) directly at (someone or something) The gunner zeroed in on the target.

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“Zero in on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/zero%20in%20on. Accessed 4 Mar. 2021.

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