Dictionary
Thesaurus
Medical
Scrabble®
Spanish Central
Browse DictionaryBrowse Thesaurus
Get our free apps!iPhone•iPad•Android
Games
Word of the Day
Video
Blog: Words at Play
My Faves
Dictionary

water milfoil

noun

Definition of WATER MILFOIL

:  any of a genus (Myriophyllum of the family Haloragaceae) of aquatic herbs with finely pinnate submersed leaves
ADVERTISEMENT

First Known Use of WATER MILFOIL

1578

Rhymes with WATER MILFOIL

canola oil, coconut oil, cod-liver oil, cottonseed oil, essential oil, induction coil, residual oil, sandalwood oil, sesame oil, tropical oil, vegetable oil, volatile oil

Learn More About WATER MILFOIL

Browse

2 ENTRIES FOUND:
  1. water milfoil
  2. water-milfoil family
Next Word in the Dictionary: water–milfoil familyPrevious Word in the Dictionary: water meterAll Words Near: water milfoil
ADVERTISEMENT
10 Charming Words for Nasty People
Put-downs with flair
Learn More
When "Literally" isn't, well, literal
How to use a word that (literally) drives some people nuts.
Watch Now
Know what this is?
Test your vocab with our fun, fast game
Go Play
Fear of cats?
Ailurophobia, and 9 other unusual fears
Learn More
Join Us
Merriam-Webster
on Facebook
Merriam-Webster
on Twitter
Bookstore: Digital and Print
Merriam-Webster references for Mobile, Kindle, print, and more.
See All
Other Merriam-Webster Dictionaries