1 a person or thing that observes
2 a person who attends a conference solely to note the proceedings
3 a person trained to identify aircraft, esp., formerly, a member of an aircrew
n a hypothetical observer who is not accelerated with respect to an inertial system. Newton's laws of motion and the special theory of relativity apply to the measurements which would be made by such observers
Diccionario de inglés definición
beholder, bystander, commentator, eyewitness, fly on the wall, looker-on, onlooker, spectator, spotter, viewer, watcher, witness
Diccionario de inglés sinónimos
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