Partitive determiner

/pˈɑːtɪtˌɪv dɪtˈɜːmɪnə/

/pˈɑːɹɾɪtˌɪv dɪtˈɜːmɪnɚ/

a specific type of determiner used to express a partial or indefinite quantity of something, indicating an unknown or unspecified portion