plus / pləs/ • prep. with the addition of: two plus four is six he was awarded the full amount plus interest. ∎ inf. together with: all apartments have a small kitchen plus private bathroom.• adj. 1. (after a number or amount) at least: companies put losses at $500,000 plus. ∎ (after a grade) better than: B plus.2. (before a number) above zero; positive: plus 60 degrees centigrade.3. having a positive electric charge.• n. 1. short for plus sign. ∎ a mathematical operation of addition.2. an advantage: knowing the language is a decided plus | [as adj.] on the plus side, the employees are enthusiastic and good-natured. • conj. inf. furthermore; also: it's packed full of medical advice, plus it keeps you informed about the latest research.PHRASES: plus or minus used to define the margin of error of an estimate or calculation: the coral was estimated to be 840 years old, plus or minus 40 years.