minusa.[L. See Minor, and cf. Mis- pref. from the French.] (Math.) Less; requiring to be subtracted; negative; as, a minus quantity.()Minus sign (Math.), the sign [-] denoting minus, or less, prefixed to negative quantities, or quantities to be subtracted. See Negative sign, under Negative.()n. A factor counted as a disadvantage; a loss or potential loss in a situation or plan; as, he added up all the pluses and minuses and decided not to do it; as, the lack of money is a big minus in an election campaign.()