Pronunciation: (plus),[key] —prep. 1. more by the addition of; increased by: ten plus two is twelve. 2. with the addition of; with: He had wealth plus fame.
—adj. 1. involving or noting addition.
2. positive: a plus quantity. 3. more (by a certain amount).
4. Elect.pertaining to or characterized by positive electricity: the plus terminal. 5. Mycol.(in heterothallic fungi) designating, in the absence of morphological differentiation, one of the two strains of mycelia that unite in the sexual process.
6. having a certain quality to an unusual degree: He has personality plus.
—n. 1. a plus quantity.
2. Arith.See plus sign. 3. something additional.
4. a surplus or gain.
—conj. Informal.also; and; furthermore: A bicycle is cheaper than a car, plus it doesn't pollute the air.