"minus" in the noun sense
1. subtraction, minus
an arithmetic operation in which the difference between two numbers is calculated
"the subtraction of three from four leaves one"
"four minus three equals one"
"minus" in the adjective sense
1. minus
on the negative side or lower end of a scale
"minus 5 degrees"
"a grade of B minus"
2. minus, negative
involving disadvantage or harm
"minus (or negative) factors"
Source: WordNet® (An amazing lexical database of English)
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