Top Definition
A term used to describe an individual who explores the depths of the ocean, in similarity to an astronaut who explores the depth of outer space, experiencing almost similar external environmental factors as an astronaut.
When Neil Armstrong did a big leap for mankind as an astronaut on the moon, Sylvia Earle leapt a great deal as an aquanaut in the oceans.
by vivek.b.nair September 18, 2012

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