Meaning of FACTORIAL in English


I. fak-ˈtȯr-ē-əl adjective

Date: 1837

: of, relating to, or being a factor or a factorial

II. noun

Date: 1869

1. : the product of all the positive integers from 1 to n — symbol n!

2. : the quantity 0! arbitrarily defined as equal to 1

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.