noun (1)
chlor·​al·​um | \ klōrˈaləm \

Definition of chloralum

 (Entry 1 of 2)

: aluminum chloride in the form of yellowish white to colorless deliquescent crystals or powder of the hydrate AlCl3.6H2O or its aqueous solution used especially in salting out glycerin lyes in soapmaking, in carbonizing wool, and as a disinfectant, deodorant, and astringent


noun (2)
chlo·​ra·​lum | \ ˈklōrələm, klōrˈal- \

Definition of chloralum (Entry 2 of 2)

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 chloralum

Noun (1)

International Scientific Vocabulary chlor- + aluminum

Noun (2)

New Latin, from International Scientific Vocabulary chloral + New Latin -um

Keep scrolling for more

Learn More about chloralum

Statistics for chloralum

Cite this Entry

“Chloralum.” The Dictionary, Merriam-Webster Inc., Accessed 24 January 2020.

Comments on chloralum

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


a feeling of well-being or elation

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?

Syn City

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!