derives from the word epic....but is way better.
used when in a state of awe or amazement.
"The movie ZombieLand is astronomical"
by Chikipoo April 30, 2010

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Top Definition
So fucking awesome that you dont even know how fucking awesome it is cause if you did your fucking head will EXPLODE
Tom:Dude Carla sucked my dick so good,IT FELT ASTRONOMICAL

Cesar:You serious?How much did she cost?
by TwitterCessarMF August 22, 2010

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large beyond comparison. Just BIG.
I have an astronomical amount of work to do for the end of the semester.
by Kayode May 03, 2007

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extremely large; exceedingly great
Nyeem's head is astronomical.
by katze_ila April 27, 2011

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Frickin Huge.
This piece of pie is of astronomical proportion.
by Giggly2 October 05, 2010

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A very large object, usually meaning huge, big, or gigantic. Many people use it in a sentence that has to do with a memorial statue, or just a large object in their house, or at an amusement park.
The sequoia tree was so astronomical, it was over 52,500 cubic feet!
by Akhaten October 27, 2014

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intensly amazing that everyone is amazed by it. also used as astro.

a better word for epic because epic has been over-used.
Dude, The Dark Knight was astronomical!
by crazybeansss May 05, 2009

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