What is the meaning of calibrated?

verb

• Make fine adjustments or divide into marked intervals for optimal measuring.
  • usage: "calibrate an instrument"; "graduate a cylinder"
  • synonyms: calibrate, graduate, fine-tune
• Mark (the scale of a measuring instrument) so that it can be read in the desired units.
  • usage: "he calibrated the thermometer for the Celsius scale"
  • synonyms: calibrate
• Measure the caliber of.
  • usage: "calibrate a gun"
  • synonyms: calibrate

adjective

• Marked with or divided into degrees.
  • usage: "a calibrated thermometer"
  • synonyms: graduated