zero in on somebody/something

From Longman Dictionary of Contemporary Englishzero in on somebody/something phrasal verb1 ATTENTIONto direct all your attention towards a particular person or thing SYN home in on She immediately zeroed in on the weak point in his argument.2 PMWSHOOTto aim a gun or other weapon towards something or someone → zero→ See Verb tableFrom Longman Business Dictionaryzero in on somebody/something phrasal verb [transitive] to direct all your attention towards a particular person or thingCompanies are looking to zero in on specific markets. → zero→ See Verb table

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Verb table

zero

Simple Form
Present
I, you, we, they	zero
he, she, it	zeroes
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Past
I, you, he, she, it, we, they	zeroed
Present perfect
I, you, we, they	have zeroed
he, she, it	has zeroed
Past perfect
I, you, he, she, it, we, they	had zeroed
Future
I, you, he, she, it, we, they	will zero
Future perfect
I, you, he, she, it, we, they	will have zeroed
> View Less

Continuous Form
Present
I	am zeroing
he, she, it	is zeroing
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you, we, they	are zeroing
Past
I, he, she, it	was zeroing
you, we, they	were zeroing
Present perfect
I, you, we, they	have been zeroing
he, she, it	has been zeroing
Past perfect
I, you, he, she, it, we, they	had been zeroing
Future
I, you, he, she, it, we, they	will be zeroing
Future perfect
I, you, he, she, it, we, they	will have been zeroing
> View Less