Keywords: reciprocal (mathematics)
Sign Definition
As a Noun
                                            1. In mathematics, an expression or function which is related to another expression or function so that their product is unity. English = reciprocal.
                                          
                                          
                                        As a Verb or Adjective
                                            1. In mathematics, a quality or function, related to another quantity or function so that their product is unity. English = reciprocal.