naph·thi·o·nate | \ ˈnafthēəˌnāt, ÷ˈnapth- \
Definition of naphthionate
: a salt of naphthionic acid
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
Ask the Editors
Name That Thing MegaQuiz: Vol. 2
Test your visual vocabulary!
Favorite New Words in the Dictionary
Level up your vocabulary with these newly added w...
How Strong Is Your Vocabulary?
Test your vocabulary with our 10-question quiz!
Spelling Bee Quiz
Can you outdo past winners of the National Spelli...