Keywords: factorial
Sign Definition
As a Noun
                                            1. In mathematics, the product of an integer (whole number) and all the integers (whole numbers) small than it. English = factorial.
                                          
                                          
                                        As a Verb or Adjective
                                            1. In mathematics, relating to a factor or factorial. English = factorial.
                                          
                                          
                                        Note
                                            1. Apologies for the temporary video for the variant. It will be replaced as soon as possible.