/əˌnʌnsɪˈveɪtɔrɪ

Definitions

1. adjective

Relating to or serving as an announcement or signal.

“The annunciatory voice echoed through the corridors, signaling the start of the ceremony.”

2. noun

A person or thing that makes or gives an announcement or signal.

“The fire alarm’s annunciatory system quickly alerted everyone in the building.”