Top Definition
A number whose existence shattered the Pythagoras' numerology that the universe could be explained in terms of fractions and whole numbers.
Two common irrational numbers that students are first exposed to are the square root of two (√2) and pi—both irrationals cannot be expressed as a ratio of two whole numbers.
by MathPlus August 21, 2016

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The Urban Dictionary Mug

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a person that doesn't belong in your friendship circle. this person can not be made in to a fraction of friendship pie.

an awesome phrase made by brooke
Golly, your suck an irrational number.
by Brooke with an "e" November 19, 2006

The Urban Dictionary Mug

Lotsa space for your liquids.

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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