zeroing

Pronunciation:  US [ˈziroʊ] UK [ˈzɪərəʊ]
  • n."Numbers" numbers 0, zero, zero degrees Celsius; there's no ...
  • num.Zero (temperature, pressure, etc) zero; minimal; the lowest point
  • v.Zero; zero; target; focus
  • WebZero adjustment zeroing; adjust the zero point
n.
v.
1.
to set a piece of equipment or control to “0” 
2.
to aim ( a weapon) at a target