Calibration definition : the act or process of determining, checking, or rectifying the settings or gradations on a measuring instrument or other piece of precision equipment; the resulting condition of the equipment.. See examples of CALIBRATION used in a sentence. Calibration is a process of checking and adjusting the accuracy of measuring instruments or equipment to ensure that they are functioning within their specified tolerances. Calibration is essential in ensuring the accuracy and precision of measurement instruments, and it is required in various industries such as manufacturing, healthcare, and laboratory testing. Calibration is the comparison of measurement values delivered by a device under test with those of a calibration standard of known accuracy. Learn about the formal definition, the modern calibration processes, the quality of calibration , the measuring devices and instruments, and the instrument calibration prompts. Calibration is the process of adjusting and verifying the accuracy of a measuring instrument or system, such as an electronic device or sensor. Learn about the importance, types, process and challenges of calibration in electronics, and how it impacts various applications and industries.