Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
A bastard gas is a stupid gas that is good for almost nothing because it can’t be used for cooking or turning on grills. Butane is not a bastard gas. Pentane is a bastard gas. 1-Pentene is a bastard gas. Isopentane is a bastard gas. Ethyl chloride is a bastard gas with a boiling point of 54.14°F 12.3°C. Ethanol is a bastard gas. Anything flammable chemical with a boiling point of 54.14°F 12.3°C or higher, or any non flammable chemical is a bastard gas. If it's a liquid at standard room temperature (68°F-77°F, 20°C-25°C) and pressure (1 atmosphere), it's definitely a bastard gas. Some "Bastard gases" make great solvents in the laboratory for extraction or chemical reactions.
Text fits
Save
Cancel