calcium oxide

1. 1.

   a white crystalline oxide used in the production of calcium hydroxide

   Synonymsquicklimelimecalxcalcined limefluxing limeunslaked limeburnt lime

   Broaderoxide

Questions about calcium oxide

What does calcium oxide mean?

calcium oxide means "a white crystalline oxide used in the production of calcium hydroxide".

What is another word for calcium oxide?

Close synonyms include quicklime, lime, calx, calcined lime, fluxing lime. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is calcium oxide a common word?

calcium oxide is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.