Definition of annunciator noun from the Oxford Advanced Learner's Dictionary



BrE BrE//əˈnʌnsieɪtə(r)//
; NAmE NAmE//əˈnʌnsieɪtər//
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a bell, light or other device that shows which of several electrical circuits is in use Word Originmid 18th cent.: from late Latin annunciator, from the verb annunciare, variant spelling of annuntiare.
See the Oxford Advanced American Dictionary entry: annunciator