Interrogative determiner

/ɪntˈɛɹəɡətˌɪv dɪtˈɜːmɪnə/

/ɪntˈɛɹəɡətˌɪv dɪtˈɜːmɪnɚ/

a type of determiner used to introduce a question or inquiry about a specific noun or group of nouns