doubling doubling /ˈdʌblɪŋ/

noun

1. Raising the stakes in a card game by a factor of 2  ( double , doubling )
   raising the stakes in a card game by a factor of 2
    I decided his double was a bluff
   I decided his double was a bluff
   
2. Increase by a factor of two  ( doubling )
   increase by a factor of two
    Doubling with a computer took no time at all
   doubling with a computer took no time at all