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.
This answer does not even begin to touch upon the complexities of blood typing. Probably the rarest in the ABO blood group is Bombay blood type, althogh this is not so much a blood group as an inheritable mutation, given its rarity (1 in 10,000 in Bombay, where it is most common, and rarer still elsewhere).