Pronunciation: (mī'nus),[key] —prep. 1. less by the subtraction of; decreased by: Ten minus six is four. 2. lacking or without: a book minus its title page.
—adj. 1. involving or noting subtraction.
2. algebraically negative: a minus quantity. 3. less than; just below in quality: to get a C minus on a test. 4. Informal.having negative qualities or characteristics; inferior.
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.
—n. 1. See minus sign. 2. a minus quantity.
3. a deficiency or loss.
4. Informal.a person or thing with no apparent abilities, usefulness, etc.: The last applicant was a definite minus.