Doppler effect definition, Doppler effect meaning | English dictionary

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Doppler effect

  

      n   a phenomenon, observed for sound waves and electromagnetic radiation, characterized by a change in the apparent frequency of a wave as a result of relative motion between the observer and the source,   (Also called)    Doppler shift  
     (C19: named after C. J. Doppler (1803--53), Austrian physicist)  
English Collins Dictionary - English Definition & Thesaurus  
Collaborative Dictionary     English Definition
adj.
large enough to have an effect or be important
[US] The series has aroused considerable interest.
exp.
not matter; have no value or effect; be useless
n.
The practice of monitoring the effects of medical drugs, especially in order to identify and evaluate previously unreported adverse reactions
[Med.] Ex: In his job as a pharmacovigilance officer, Andrew develops diagnostic tools to improve drug safety
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