Top Definition
An arbitrarily defined value, usually abbreviated by a J in equations, which adjusts for errors in the process of calculation. This is generally used by physics students who are unable to achieve expected results through experimentation.
According to our data, all of the ice caps will melt in 34 days. So I threw in a little j-factor that bumped it up to 94 years.
by TalkSauce February 19, 2007

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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A complement named to anyone who can "j" (also known as jizz, excluding pre-pubescent children) when something happens, as in real life or a video game.
"Damn, J Factor, you just raped that joan!"

"Fuck yeah, J Factor!"
by Joanse Cos December 05, 2009

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt