ad·​e·​lite | \ ˈa-də-ˌlīt \
plural -s

Definition of adelite

: a mineral consisting of a gray or grayish yellow calcium and magnesium arsenate CaMg(OH)AsO4 (hardness 5, specific gravity 3.74)

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!

First Known Use of adelite

1892, in the meaning defined above

History and Etymology for adelite

International Scientific Vocabulary adel- + -ite

Keep scrolling for more

Learn More about adelite

Time Traveler for adelite

Time Traveler

The first known use of adelite was in 1892

See more words from the same year

Statistics for adelite

Cite this Entry

“Adelite.” The Dictionary, Merriam-Webster Inc., Accessed 21 January 2020.

Comments on adelite

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


good-natured easy friendliness

Get Word of the Day daily email!

Test Your Vocabulary

Intact Latin Quiz

  • roman tablet
  • What did focus mean in Latin?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

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

Love words? Need even more definitions?

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