Wordnet 3.0
NOUN (1)
1.
a celebrated experiment conducted by Albert Michelson and Edward Morley;
their failure to detect any influence of the earth's motion on the velocity of light was the starting point for Einstein's theory of relativity;
WordNet (r) 3.0 (2006):
Michelson-Morley experiment
n 1: a celebrated experiment conducted by Albert Michelson and
Edward Morley; their failure to detect any influence of the
earth's motion on the velocity of light was the starting
point for Einstein's theory of relativity