a. Flickering lightly: lambent firelight.
b. Having a gentle glow; luminous: "A lambent moon cast shadows on crumbling walls" (Stephen Benz). See Synonyms at bright.
2. Light or brilliant: lambent wit.
[Latin lambēns, lambent-, present participle of lambere, to lick.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.