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. The meaning of CALIBRATION is the act or process of calibrating : the state of being calibrated. How to use calibration in a sentence. This is why calibration is necessary to maintain the reliability and trustworthiness of measurement instruments. What is Calibration Calibration is defined as the process of checking and adjusting the performance of a measuring instrument by comparing it with a standard reference that is already known to be accurate. Calibration is important because it improves measurement accuracy, maintains consistency, and ensures compliance with industry standards. Without calibration , instruments may give incorrect readings, leading to faulty designs, poor-quality products, or unsafe conditions.