Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

chlorothionite

noun
chlo·​ro·​thi·​o·​nite
plural -s

Definition of chlorothionite

: a mineral K2Cu(SO4)Cl2 consisting of potassium copper sulfate chloride found on Vesuvius

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 chlorothionite

International Scientific Vocabulary chlor- + thion- + -ite

Keep scrolling for more

Learn More about chlorothionite

Statistics for chlorothionite

Look-up Popularity

Comments on chlorothionite

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

Show Comments  Hide Comments 

WORD OF THE DAY

fiduciary

Listen to the pronounciation of fiduciary

involving a confidence or trust

Get Word of the Day daily email!

Test Your Vocabulary

Word Puzzles

  • alt 57589b2b4c6a3
  • Which answer pairs best with each of the following words? living, estate, club, music, road, mile
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

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