transcription, транскрипция: [ pɜ:(r)tə(r)beɪʃ(ə)n ]
( perturbations)
1.
A perturbation is a small change in the movement, quality, or behaviour of something, especially an unusual change. ( TECHNICAL )
...perturbations in Jupiter’s gravitational field.
N-VAR
2.
Perturbation is worry caused by some event. ( FORMAL )
This message caused perturbation in the Middle East Headquarters.
= alarm
N-UNCOUNT