Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW
: water sense 1a — compare heavy water
Recent Examples on the Web
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'light water.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
1933, in the meaning defined above
Keep scrolling for more
Share light water
Resources for light water
19 Nov 2018
Time Traveler for light water
See more words from the same year
Comments on light water
What made you want to look up light water? Please tell us where you read or heard it (including the quote, if possible).
by force of circumstances
Get Word of the Day daily email!
Difficult Vocab Quiz
Test your visual vocabulary with our 10-question challenge!
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
A common word, but only by a whisker
Semantic bleaching and the power to amaze
Cans of worms, wild-goose chases, and more
Words from the week of 11/16/2018
And is one way more correct than the others?
The story of an imaginary word that managed to sneak past our editors and enter the dictionary.
How to use a word that (literally) drives some people nuts.
The awkward case of 'his or her'
Another round of challenging vocab!
(Secret October WOTD Quiz)
Listen to the words and spell through all three levels.