Wiktionary(0.00 / 0 votes)Rate this definition: 1  steal(Noun) The act of stealing. 2  steal(Noun) A piece of merchandise available at a very attractive price. 3  steal(Noun) A situation in which a defensive player actively takes possession of the ball or puck from the opponent's team. 4  steal(Noun) A stolen base.
Within the ABO/Rhesus Group systems which are used to classify most blood types, there are several rare blood types. The rarest is AB-, with less than one percent of the world's population having this blood type. B-and O-are also very rare, each accounting for less than 5% of the world's population.
There are 8 different blood types (A+, A-, B+, B-, O+, O-, AB+, AB-). The most well known and medically important blood types are in the ABO group. Even though type AB is the rarest blood type, type AB plasma can help people with any blood type. 2  So, more type AB plasma donors are always needed. 3  By giving plasma regularly you can help people with AB, O, B and A blood types.