Top Definition
1. In common, everyday language when you have a theory it means you simply have a guess. It doesn't have to be supported by evidence or fact.

2. In the scientific community, an explanation supported by a evidence and is logically sound.
1. "My theory is that Jane stole the cookie from the cookie jar!" - Jack after he found no cookies in the cookie jar.

2. The theory of Evolution logically explains why life is so diverse, and the evidence that supports it includes fossils, DNA, living specimens, and bacterial research.
Jack the Smackによって 2009年10月21日(水)

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A well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena.
"Theories can incorporate facts and laws and tested hypotheses."

"True in fact and theory."
Jordan O'connorsによって 2005年11月07日(月)

The Urban Dictionary Mug

Lotsa space for your liquids.

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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

Soft and offensive. Just like you.

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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).

Buy the t-shirt
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