If something is diffuse, it is very spread out or scattered.
Her memories of her past were scarce and diffuse, as she could only remember specific things.
by TheRedEyedReaper January 13, 2016
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A modified down tube for a water pipe that instead of just having one large hole opening into the water, instead the glass comes to a closed tip, along which are several smaller holes. This supposedly cools the smoke before being inhaled by diffusing (spreading) the smoke over a larger area.
Fuck, smashed my down tube cleaning it. Replaced it with a diffuser instead so my smoke should be cooler.
by jettt December 01, 2006
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The movement of molecules from an area of high concentration to an area of low concentration.
by randomword12 October 26, 2008
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Moving Venmo balance from one account to another back and forth until all of you have the same balance and no one wants to put their card down anymore.
My Venmo balance is 120 and yours is $90 so by the laws of diffusion, you should pay. I’ll Venmo you
by SR912 January 10, 2020
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the movement of molecules and ions from a high concentration area to a lower concentration area down the concentration gradient as a result of their random movement
example of diffusion: oxygen diffuses from the alveoli into the bloodstream
by ScienceHuman101 March 10, 2016
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A piece of automotive bodywork that is meant to deliver downforce by channeling air under the car, especially under the midsection and rear, so that it creates a low-pressure system under the car which sucks the vehicle to the ground. This increases traction and stability at high speeds.

These are especially prevalent on high-performance sports cars, supercars and most racing cars when putting spoilers that create similar downforce would just cause too much drag.
If you don't see a big tailwing on the back of a modern supercar, look at the tail for a diffuser.

The double-deck diffusers used by a few teams caused a scandal in Formula One over the 2009 season.
by Airrider October 10, 2009
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An emo-punk band. Most of their songs revolve around being hated by everyone. They sound like Linkin Park but with a twist of emo in it. I don't see how that's punk, honestly. Punk's about rising up against the system, doing what you feel like doing and not crying about your ex-girlfriend or being pushed around by everyone.

See Simple Plan.
Oh my God The World Hates Me
Oh My God My Girlfriend Left Me
There's nothing left in the world
I hope you're happy now
*A piss poor guitar solo*
by Fuck Halo 2. November 04, 2004
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