To focus or direct attention on something or someone specific.
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To aim all your attention or effort at one target.
When you zero in on something, you focus on it sharply and shut out the rest.
It is often used when a person spots the key issue and puts their energy exactly where it counts.
"Hone in On"
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Gradually refining your focus toward a target through a process of adjustment
"Zero Out"
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To reduce something to zero, or to cancel or nullify it
"To Zero in"
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Directing sharp focus toward a specific target or issue