(algebra) An algebra such that every subalgebra generated by one element is associative.

plural of power tool

Any tool powered by an electric motor. / (slang, derogatory) A very obnoxious person.

(Britain, slang) A tablet of the drug ecstasy.

(statistics) The probability that a statistical test will reject a false null hypothesis, that is, that it will not make a type II error, producing a false negative.

plural of power hitter

(baseball) a batter with a high slugging percentage

(basketball) A forward who is the taller of the two forward positions, and is often responsible for scoring near the basket, collecting rebounds and blocking shots in defense.

(law) Where a grantor has created a fee simple subject to condition subsequent, and the condition of the grant has come to pass, the right of the grantor to physically reclaim ownership of the land.

A portable power supply.