2 definitions by DragonFyre

Top Definition
atm
A scientific measure of pressure equivalent to about 14.6959488 pounds per square inch. Abbreviation for "atmosphere." Its is a measurement of how much pressure the atmosphere exerts on an object at sea level (where the pressure would be 1 atm).
There is 2.5818 atm of pressure on that balloon, causing it to shrink from its original size when the pressure was 2 atm.
by DragonFyre August 19, 2005
DHS
Abbreviation of "Department of Homeland Security"--the a US government agency devoted to maintaining the safety of America.
"Didn't you hear? The DHS got an 'F' on computer security last week... again."
by DragonFyre March 19, 2006

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×