Definition of wavelength
1
: the distance in the line of advance of a wave from any one point to the next point of corresponding phase
2
: a particular course or line of thought especially as related to mutual understanding
two people on different wavelengths
Test Your Vocabulary
Name That Food
-
- Name these cookies!

Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share wavelength
Time Traveler for wavelength
The first known use of wavelength was in 1850
See more words from the same year