Skip to main content
One of the rarest forms of blood type among humans. A Universal donor.

O Negative
Blood type is very important because it can potentially be transfused to any patient regardless of their blood type. In emergency situations, when there isn’t enough time to determine a patient’s blood type, O negative blood is often used.

Best blood type to donate:
O +, O - (i.e. Son), B-, A- (i.e. ME) RH-
Only about 7% of all people have Type O negative blood
Type O negative blood is the preferred type for accident victims and babies needing exchange transfusions
There is always a need for Type O donors because their blood may be transfused to a person of any blood type in an emergency
O- is Universal donation for the masses. What is yours?
O- by KWatlonTyUniverseal April 18, 2010
O- mug front
Get the O- mug.
See more merch
A smiley of a cheering guy throwing his hands in the air, expressing great happiness. In a rare case, it can portray someone throwing his hands in the air in exasperation or panic.
1. YES! My new computer has arrived! \o/

2. Dammit, I have loads of work to do and tomorrow's the deadline! \o/
\o/ by Fluid August 26, 2003
Related Words
o.g. o O.D o.O O rly O-Town o.u.t.l.a.w. o_O O.V O-ring
The letter fucking o. Are you that bored?
Or you just smashed your keyboard but only a o cane out?
Something someone says when they're too lazy to type "Oh".
Person 1: Sorry man I can't go to your birthday.
Person 2: O
O by DylanPaterson July 7, 2019
The act / face of being surprised.
OMG I didn't know he did that! :O
:o by Jak Dude May 5, 2005
o .
o . by o . man September 15, 2010
Smillie for joking or messing around
- ure mums teh hawt
- i know ;o
;o by hvg666666gh March 30, 2005