Zero in on
Meaning
To focus precisely and intently on a specific target, objective, or detail.
Origin
The phrase "zero in on" originates from the precision world of marksmanship and artillery. To "zero" a firearm or artillery piece means to calibrate its sights or trajectory so that it consistently hits the bullseye at a given range. Gunners would make test shots and adjust their aim, literally "zeroing in" the weapon until it was perfectly accurate. This methodical process of fine-tuning for absolute precision migrated from the battlefield and firing range into general language during the 20th century, becoming a vivid metaphor for focusing intently and accurately on a specific objective or problem.
Examples
- The detective worked late into the night, trying to zero in on the key piece of evidence.
- Before we can start the new marketing campaign, we need to zero in on our ideal customer demographic.