Definition of elk kelp
: a large marine brown alga of the genus Pelagophycus (order Laminariales) sometimes reaching a length of 100 feet or more and characterized by blades that are split, the whole structure being somewhat like a tree in shape
Test Your Vocabulary
Challenging Words You Should Know
-
- Often used to describe “the march of time,” what does inexorable mean?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share elk kelp