1 definition by Jazzercise

Top Definition
A term coined in conjunction with the term "grue" by Nelson Goodman to illustrate the problem of induction.

In this context, bleen means "blue if observed before a time t, and green if observed after," whereas grue is the other way around.
You cannot prove inductively that all sapphires are blue; you can only say that they are bleen.
by Jazzercise February 17, 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