Definition of omega-6
: being or composed of polyunsaturated fatty acids in which the first double bond in the hydrocarbon chain occurs between the sixth and seventh carbon atoms from the end of the molecule most distant from the carboxylic acid group and which are found especially in vegetable oils, nuts, beans, seeds, and grains — compare omega-3
Buying Guide
Our Reviews team has selected the best multivitamins.
Test Your Vocabulary
Name That Food
-
- Name these cookies!

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share omega-6
Time Traveler for omega-6
The first known use of omega-6 was in 1976
See more words from the same year