calibrate in WordNet English dictionary

1. make fine adjustments or divide into marked intervals for optimal measuring
   "calibrate an instrument"; "graduate a cylinder"
   calibrate  graduate  fine-tune 
   
2. measure the caliber of
   "calibrate a gun"
   calibrate 
   
3. mark (the scale of a measuring instrument) so that it can be read in the desired units
   "he calibrated the thermometer for the Celsius scale"
   calibrate