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.
1 AB Negative is the rarest blood type, and less than a percent of the world's population has this rare blood. 2  There will be slight differences in the rarity of blood types depending on location and country, but generally, this blood type is not seen very often.3  B Negative. This blood type is also extremely rare, and only about two percent of the population has this type of blood. 2  In general, all blood types that are negative are more rare than the positive. 3  B Negative is the second rarest type of blood in the world.