Define Si Meaning

Si
Short for "System International." Also known as the Metric System.

The SI system makes more sense than the English system. It should be officially adopted by the US, but we Americans are too lazy for change.
By Gabbie
Si
Its a model of faster model of the Honda Civic, meaning "Sport Injection"

My civic DX got spanked by that Si hatck.
or
Im bout to get me some Si rimz dawg.
By Dede
Si

SI is the only path to achieve artificial intelligence.
By Myrta
Si
Abbr. Simple Simon. Individual renowned for extreme stupidity and slowness of mind.

"Jog on you si - you're as thick as pigshit" or "he's a proper si that one, thicker than a King Edward yoghurt"
By Grata
Si
derogatory term for man who thinks hes a fox.

si, you isnt a fox dude!
By Winona
Si
Abriviation for suck it, normally used on MMORPG's to make fun of the loser.

Oh, man! Did you just see that head shot? Bet you didnt see that coming loser! SI n00b! Better luck next time!
By Callie
Si
VERY sweet, cute, attractive, thoughtful, smart, funny young woman found in and around the London area. Keep your eyes peeled but dont touch, she's already claimed ;)

Just think of someone that fits the description above - there's only one person you can think of!
By Lesli
Si-Si
She says she doesn't see it, but I think people that don't even know her can see it from a mile away. She has a great smile that can make your day, and she seems to always have a smile to spare. She is very nice and caring and doesn't judge you. She is very cute and has a lot of little things that she does that can make you smile or laugh. She is very smart and always knows the right things to say. She is fun to hang out with and talk to. She is a very amazing person for so many reasons. She says she doesn't see it, but she should. She is a good singer too. Si-Si is perfect in every way and I am so glad that I get to call her my friend.

What song is this Si-Si?
What are you talking about this is one of your favorite songs!
By Fawn
Sis-sis
A best friend that you can call sis-sis instead of sis. Female version of brobro. Guys can have a best friend that is a girl that you can call sis-sis and nothing is going on or no one is going out.. Normally if you are best friends you can treat her like a real sister. You can love her like a real sister say I love you like you say to a real sister. Basically best friends.

Jason: Wow Chelsea, we have been friends for years now and I proud to call you my sis-sis.

Chelsea: Thanks Jason! Can I call you brobro?

Jason: Sure sis-sis.

Chelsea: Love ya brobro.

Jason: Love ya sis-sis.
By Teresa
Si-si
a philosopher of sorts. looks into a mirror and will see many reflections.

resembles a chilly philly dip; sweet and TANGY.


yo i'm si-si. LIKE A DAISEY! give me shit and i'll shit on your face. verbal diarrhoea type shit.
By Maudie