definition of
calibrate

[1] #1 calibrate v. [graduate, fine-tune] make fine adjustments or divide into marked intervals for optimal measuring; "calibrate an instrument"; "graduate a cylinder". wn

[2] #2 calibrate v. 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". wn

[3] #3 calibrate v. measure the caliber of; "calibrate a gun". wn