Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

water lettuce

noun

Definition of water lettuce

: a common tropical floating plant (Pistia stratiotes) forming a rosette of spongy wedge-shaped leaves

— called also water cabbage

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More about water lettuce

Share water lettuce

Statistics for water lettuce

Look-up Popularity

Comments on water lettuce

What made you want to look up water lettuce? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

canker

Listen to the pronounciation of canker

to corrupt or become corrupted

Get Word of the Day daily email!

Test Your Vocabulary

A Green Quiz

  • shamrock
  • What is the best definition of green-eyed monster?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

Ask the Editors

Word Games