To calibrate means to adjust a tool or system so it measures accurately, usually by comparing it with a known standard. It can also mean to carefully set or tune something to the right level.
From 'caliber' plus the verb-forming ending '-ate.' It started as a technical term for setting the proper size or scale on measuring devices. The idea expanded to include fine-tuning instruments, machines, and even plans.
Every time your phone’s GPS or your bathroom scale works correctly, it’s because someone calibrated it. The metaphor has spread so far that we now 'calibrate expectations' or 'calibrate responses,' treating emotions like instruments that can be tuned. It shows how scientific precision language leaks into everyday psychology.
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