[1] : WordNet (r) 2.0

doppler effect
     n : change in the apparent frequency of a wave as observer and
         source move toward or away from each other syn: doppler
         shift
see also:
doppler shift 

Doppler Effect >> D Words
Doppler Effect, definition of term: Doppler Effect
doppler+effect_pag1.html

Effect >> E Words
Effect, definition of term: Effect
effect_pag1.html

Doppler Shift >> D Words
Doppler Shift, definition of term: Doppler Shift
doppler+shift_pag1.html

In Effect >> I Words
In Effect, definition of term: In Effect
in+effect_pag1.html

Eliza Effect >> E Words
Eliza Effect, definition of term: Eliza Effect
eliza+effect_pag1.html

Field Effect Tr >> F Words
Field Effect Tr, definition of term: Field Effect Tr
field+effect+tr_pag1.html

Law Of Effect >> L Words
Law Of Effect, definition of term: Law Of Effect
law+of+effect_pag1.html