initializing

verb
  1. 1

    To assign initial values to something

  2. 2

    To assign an initial value to a variable

  3. 3

    To format a storage medium prior to use

  4. 4

    To prepare any hardware (such as a printer or scanner) for use

Source: https://en.wiktionary.org/wiki/initialize, https://en.wiktionary.org/wiki/initializing