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The amount of available ass worthy of pursuit in any situation
"Dude, look at all these chicks, and they're all available, this party has great assmosphere"
by Ham dogg August 23, 2007
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2
(noun) The air space between the bottom of the buttocks and the top of the water in a toilet bowl. Can be applicable before, during, and after defication.
Hey! It's wet in here, there must be a break in the assmosphere.
by king_charles November 23, 2016
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3
When an ass is so large it has its own atmosphere (assmosphere)
Her/His ass is so big it has its own assmosphere.
by adamayersrock October 08, 2009
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4
1.) The puff of stale flatulent air trapped in upholstery or foam that is released when the victim sits in the chair holding the stale flatulence.

2.) The waft of air that is released when a trash bag is sealed.
There was some serious assmosphere when I sat in Milton's office chair.

The trash's assmosphere is still lingering hours after I took the trash out.
by Talon2DSO July 21, 2009
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6
the aroma left in the room by someone that has cleared is colon area of excess air.fart
The elevator was crowded, and more people got in, regardless of the assmosphere left by an unidentified rider.
by english prof. April 20, 2004
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7
The unpleasant aura or "vibe" that accompanies the presence of an irritating, ignorant, small-minded person.
WOW! That guy's assmosphere totally ruined the party for all of us.
by Charles Gambetta October 11, 2007
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