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a concept, heretics refer to it as a "function", in mathematics. the meaning of life and the universe and all. zeta will show the limits of the human mind. god.
zeta(2)= sum of inverses of squares = pi^2/6.
by ianzinho September 16, 2006
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Zeta is slang for "alien".
Bob Nickles: I don't believe in Zetas.

Johnny Doogoo: Just for saying that, the Zetas are going to abduct you.
by Kight of Cyndonia July 03, 2010
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Zeta is a girl, she's smart, funny, kind, and doesn't talk no for a answer.

Hates bullies. She stands up for her friends and loves animals, nature, and writing.

Boys thinks she's cute, but she doesn't play, she's a girl if mysterys, but yet a open book.
Boy Wow Zeta is so cute
Other boy ya but she is going to fall for me
Zeta no I'm not
Me aka her bff/ is a girl Boys don't even try, she's taken, by someone better
by Princess of Demons and Angels November 24, 2018
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1) The greatest Gundam series ever

2) Zeta Gundam, a prototype Gundam capable of transforming into the Waverider to re-enter and fly in the atmosphere
1) While the original Gundam, and other other series like SEED and 08th MS Team were great, Zeta Gundam takes the cake.

2) That Zeta Gundam sure is powerful.
by RHS Student October 11, 2004
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A 'Zeta' is slang for:

1.A Babe

2.A Honey

3.A Sexy Chick

Basically any female who is 'Fine'

4.The name of a dog who is both faithful and loyal but has to make room for a 'Hot Female' i.e.'Get off the settee Zeta'
'Wow , this place is full of ZETAs'.

'Is this a ZETA walking towards us'.

'She's one hell of a ZETA'.

'Get off the settee ZETA'.

'Pack your bags Zeta,your off on holiday'.

by Atez November 20, 2006
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An imaginery grey alien from Zeta Reticuli whose existence is only claimed by a group of delusioned people.
See also Zetan and Zeta Reticulian.
Zetas are going to screw our earth!
by jaelee11 February 10, 2008
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