Definition
To calibrate is to tune something until it reads true — to adjust an instrument against a known standard so its measurements can be trusted. Scales, telescopes, and thermometers must be calibrated; so, figuratively, must expectations and responses, finely matched to the situation. The word implies meticulous, exacting work: calibration is the difference between a guess and a measurement. A well-calibrated system sits in quiet equilibrium with the standard it was set against.
Examples
- Technicians calibrate each sensor against a reference weight before shipping.
- A good teacher calibrates the difficulty so the class is neither bored nor lost.
- She calibrated her tone carefully, pausing to scrutinize every word.
Collocations
calibrate an instrument·carefully calibrated·calibrate a response·recalibrate expectations
Synonyms
adjust·fine-tune·tune·gauge·standardize
Antonyms
misalign·skew
Word family
calibration (noun)·recalibrate (verb)
In TOEFL & IELTS
TOEFL science and technology passages use 'calibrate/calibration' for instruments and models; social-science texts use it figuratively for 'finely calibrated' policies or responses. In IELTS Writing, 'a carefully calibrated approach' signals precision and balance. The verb 'recalibrate' (to adjust again, often expectations) is a high-value derivative.