Learn how to say Actuation correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word actuate:
1 [with object] make (a machine or device) operate:
the pendulum actuates an electrical switch
2make (someone) act in a particular way; motivate:
the defendants were actuated by malice
late 16th century: from medieval Latin actuat- ‘carried out, caused to operate’, from the verb actuare, from Latin actus (see act). The original sense was ‘carry out in practice’, later ‘stir into activity, enliven’; sense 1 dates from the mid 17th century