n. (also Doppler shift) Physics an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move towards (or away) from each other. [C. J. Doppler, Austrian physicist d. 1853]
DOPPLER EFFECT
Meaning of DOPPLER EFFECT in English
English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012