nitrous oxide

noun

1. A nonflammable gas commonly used in surgery and dentistry for its anaesthetic and analgesic effects and in motorsport for bursts of added power.

   “Holonym: gas and air”

   “On social media and beyond, many have taken to using the brand’s name in a more colloquial fashion, with “Galaxy Gas” being used as a catchall for nitrous oxide inhalants at large, regardless of whether they are actually Galaxy Gas products or not.”