English-Finnish translations for double factorial

Definition of double factorial

• For an odd integer, the result of multiplying all the odd integers from 1 to the given number; or for an even integer, the result of multiplying all the even integers from 2 to the given number; symbolised by a double exclamation mark . For example, 9!! = 1 * 3 * 5 * 7 * 9 = 945

Related words

• double fault
• double facade
• double-faced