laughing gas

1. 1.

   inhalation anesthetic used as an anesthetic in dentistry and surgery

   Synonymsnitrous oxide

   Broaderinhalation anesthetic

Questions about laughing gas

What does laughing gas mean?

laughing gas means "inhalation anesthetic used as an anesthetic in dentistry and surgery".

What is another word for laughing gas?

Close synonyms include nitrous oxide. 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 laughing gas a common word?

laughing gas 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.