Definition of plus adjective from the Oxford Advanced Learner's Dictionary

        

    plus1

     adjective
    adjective
    BrE BrE//plʌs//
     
    ; NAmE NAmE//plʌs//
     
     
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  1. 1  used after a number to show that the real number or amount is more than the one mentioned The work will cost £10 000 plus.
  2. 2  above zero The temperature is plus four degrees. opposite minus
  3. 3  [only before noun] used to describe an aspect of something that you consider to be a good thing One of the hotel's plus points is that it is very central. On the plus side, all the staff are enthusiastic. The plus side of working at home is that you can be more flexible. opposite minus
  4. 4  [not before noun] (used in a system of marks/grades) slightly higher than the mark/grade A, B, etc. I got B plus (B+) in the test. opposite minus
  5. Word Origin mid 16th cent.: from Latin, literally ‘more’.
See the Oxford Advanced American Dictionary entry: plus