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3.
a person who proof-reads or edits fanfiction.
Thanks for beta-ing my fic, babe!
by Chicky December 28, 2003
 
1.
A beta is a male who, instead of being alpha and manning up, completely bitches out. Can apply to many situations, but often refers to scenarios with women.
Guy 1: Bro, hook me up with that girl's friend
Guy 2: Fuck that. I'm going to double up with both of them. Stop being such a beta.
by TLSForever July 15, 2011
 
2.
A beta version of a program, game etc... is an unfinished version released to either the public a select few or whoever signs up to beta test it for bugs or glitches. A common mistake people make when talking about for exampl 'Msn beta' is they say 'better' instead of beta.
Windows is not exactly a beta test because instead of testing all the numerous bugs in the operating system they sell them :P.
by Theodore Robson January 09, 2006
 
4.
1. An unfinished version of a program released for users to test before the final version is released.
2. A person who proofreads fiction.
3. A type of fish.
1. I beta'd Photoshop CS3 and gave Adobe feedback when I was done.
2. My lovely beta caught my grammatical errors in my story.
3. Sally used to have a beta fish, but her cat ate it.
by Kathleen the green bean May 06, 2007
 
5.
Specific information on how to perform a difficult task. (originated in rock climbing/bouldering)
(Climbing) Chip had some pretty good beta for me, so I think I've got this problem dialed in. (General) Can you give me some beta on how to get to your house?
by Ash April 26, 2005
 
6.
The opposite of an alpha male, someone who seeks acceptance from a woman and is needy.
Platter: You begged her to go out with you and said you were sorry a bunch of times?

Sherlock: Yeah I went beta on her, at first I was alpha but later I became beta after she rejected me
by the AK July 11, 2008
 
7.
The final state of a program released by Microsoft.
Windows Vista, Internet Explorer, Windows ME, etc are all beta.
by eons of grey August 30, 2007