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wave theory

noun
1.
Also called undulatory theory. Physics. the theory that light is transmitted as a wave, similar to oscillations in magnetic and electric fields.
2.
Historical Linguistics. a theory that accounts for shared features among languages or dialects by identifying these features as innovations that spread from their points of origin to the speech of contiguous areas.
Origin of wave theory
1825-1835
First recorded in 1825-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for wave theory

wave theory

noun
1.
the theory proposed by Huygens that light is transmitted by waves
2.
any theory that light or other radiation is transmitted as waves See electromagnetic wave
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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