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1.
Slang for "See you later." Commonly used as short hand in instant mesage or email conversations.
I'll talk to you later.

Seya.
by Tekno000 June 23, 2006
 
2.
An extreme abbreviation of "see ya" into one syllable. Always spoken LOUDLY.

1: An expression used when peacing out.

2: An interjection used to inform someone that they have been thoroughly pwned, usually in the physical sense.
1: "You going to get some pizza?"
"Yeah, I'll be back in a bit. SEYA!"

2: (Player 1 one-hit KOs Player 2)
Player 1 to Player 2: "SEYA!"
by mpcsm August 23, 2010