SINCE 1828
naphthoquinone
noun
naph·tho·qui·none
variants:
also naphthaquinone \ ˌnaf-thə-kwin-ˈōn, ˌnap-, -ˈkwin-ˌōn 
\
\
Medical Definition of naphthoquinone
: any of three isomeric yellow to red crystalline compounds C10H6O2 derived from naphthalene
especially
: one that occurs naturally in the form of derivatives (as vitamin K)
Comments on naphthoquinone
What made you want to look up naphthoquinone? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Word Puzzles
-
- Which answer pairs best with each of the following words? living, estate, club, music, road, mile
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
-
Word Puzzles
Challenge yourself with these word puzzles. Can you solve them all?
Take the quiz -
Where in the World? A Quiz
Do you know what languages these words come from?
Take the quiz -
Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz -
Syn City
Build a city of skyscrapers—one synonym at a time.
Play the game
Share naphthoquinone
Resources for naphthoquinone