Laughing gas is a type of anaesthetic gas which sometimes has the effect of making people laugh uncontrollably.
= nitrous oxide
N-UNCOUNT
Laughing gas is a type of anaesthetic gas which sometimes has the effect of making people laugh uncontrollably.
= nitrous oxide
N-UNCOUNT
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006