Share this entry

Share this page


Line breaks: calx
Pronunciation: /kalks

Definition of calx in English:

noun (plural calces /ˈkalsiːz/)

Chemistry , archaic
A powdery metallic oxide formed when an ore or mineral has been heated.
Example sentences
  • Then a French pharmacist named Pierre Bayen pointed out to Lavoisier that calx of mercury, which we would now call mercuric oxide, can be converted to mercury simply by heating.
  • Other common names by which the compound is known include burnt lime, unslaked lime, fluxing lime, and calx.
  • The reason a metal formed when its calx was heated with charcoal was therefore because the phlogiston left the charcoal and united with the calx.


late Middle English: from Latin, 'lime', probably from Greek khalix 'pebble, limestone'.

Words that rhyme with calx


Definition of calx in:

Share this entry

Share this page


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day colloquy
Pronunciation: ˈkɒləkwi
a conversation