Definition: Laughing gas, also known as nitrous oxide, is a gas that's combined with oxygen to produce a calming effect and a sense of well-being when inhaled.
Also Known As: Nitrous Oxide
Glossary Definition of Dental Term - Laughing Gas
by Tammy Davenport
for About.comUpdated: December 6, 2007
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
Explore Dental Care
Must Reads
About.com Special Features
Learn how you can reduce your your numbers with these nutrition and exercise tips. More >
Keep yourself, and your family, happy and healthy this fall with these tips. More >
Also from About.com:
©2009 About.com, a part of The New York Times Company.
All rights reserved.