pluses

1. added to: 2 plus 2 equals 4
2. increased by; in addition to: salary plus bonus
3. Informal with the addition of: he returned wiser and plus $300

adjective

1. indicating or involving addition: a plus sign
2. positive: a plus quantity
3. somewhat higher than: a grade of B plus
4. involving extra gain or advantage: plus sales, a plus factor
5. Informal and more: she has personality plus
6. Bot. designating one of two strains of certain fungi and algae which only mate with the opposite (minus) strain
7. ☆ Elec. positive: the plus terminal

adverb, conjunction

noun pl. pluses or plusses

1. a plus sign
2. an added or favorable quantity or thing
3. a positive quantity