Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

ettringite

noun
et·​tring·​ite | \ ˈe‧triŋˌīt\
plural -s

Definition of ettringite

: a mineral Ca6Al2(SO4)3(OH)12.26H2O consisting of hydrous basic sulfate of calcium and aluminum

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!

History and Etymology for ettringite

German ettringit, from Ettringen, Rhine Province, Germany, its locality + German -it -ite

Keep scrolling for more

Learn More about ettringite

Statistics for ettringite

Look-up Popularity

Comments on ettringite

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

Show Comments  Hide Comments 

WORD OF THE DAY

hobbyhorse

Listen to the pronounciation of hobbyhorse

a topic to which one constantly reverts

Get Word of the Day daily email!

Test Your Vocabulary

Where in the World? A Quiz

  • peter bruegel tower of babel painting
  • What language does pajama come from?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

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