monitoring

/M AA1 N AH0 T ER0 IH0 NG/
verb
  1. 1

    To watch over; to guard.

noun
  1. 1

    The carrying out of surveillance on, or continuous or regular observation of, an environment or people in order to detect signals, movements or changes of state or quality.

Source: https://en.wiktionary.org/wiki/monitor, https://en.wiktionary.org/wiki/monitoring