IPA: /ʌnˈkælɪˌbreɪtɪd/
KK: /ʌnˈkælɪˌbreɪtɪd/
Not adjusted or set to a standard measurement or value.
The uncalibrated instrument gave inaccurate readings during the experiment.
Uncalibrated → It is formed from "un-" (meaning not) and "calibrated" (from Latin "calibrare", meaning to measure or adjust). The word "uncalibrated" means not measured or adjusted, indicating something that has not been set to a standard or scale.
Think of something that is 'not' ('un-') 'measured' or 'adjusted' ('calibrated') — that's what uncalibrated means.