Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

calcium oxide

noun

Definition of calcium oxide

  1. :  a caustic solid CaO that is white when pure and that is the chief constituent of lime



1869

First Known Use of calcium oxide

1869


Learn More about calcium oxide


Seen and Heard

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

WORD OF THE DAY

mysterious, holy, or spiritual

Get Word of the Day daily email!