wavelength

wave·length Audio Help (wāv'lěngkth', -lěngth', -lěnth')

n. Abbr. WL
The distance between one peak or crest of a wave of light, heat, or other energy and the next corresponding peak or crest.

(Download Now or Buy the Book)
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.