laughing gasses

laughing gas


Origin:
1835–45

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Collins
World English Dictionary
laughing gas
 
n
another name for nitrous oxide

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

laughing gas laugh·ing gas (lāf'ĭng)
n.
Nitrous oxide, especially as used as an anesthetic.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
laughing gas   (lāf'ĭng)  Pronunciation Key 
Nitrous oxide used as a mild anesthetic.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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