minus

1. reduced by the subtraction of; less: four minus two
2. Informal without; lacking: minus a toe

adjective

1. indicating or involving subtraction: a minus sign
2. negative: a minus quantity
3. somewhat less than: a grade of A minus
4. Bot. designating one of two strains of certain fungi and algae which only mate with the opposite (plus) strain
5. ☆ Elec. negative

noun

1. a minus sign
2. a negative quantity
3. a negative quality, feature, etc.