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
