Etymology The phrase possibly comes from adjusting a sighting mechanism of a firearm to minimise the discrepency between where the sight points and where a bullet lands on a target.
Verb to zero in
#: The pilot zeroed in and launched the guided missile. #: Zero in and find a watermark in the image. #*1981, USENET 15 Sep 1981 1 on 08 Dec 2006 #*:When you invoke the VAX C compiler with -p for profiling it generates an assembly-language call to a profiling
subroutine for which I substituted my own heap-checker, and that enabled me to zero in on a heap-violation which was caused by an array-out-of-bounds condition.
Related terms zero in on