Definition of grammaticality in US English:

grammaticality

noun

  • See grammatical

    • ‘Participants were told that their task would be to rate new items for grammaticality, some generated from the same grammar as had been used to generate the training items and others generated specifically to violate the grammar.’
    • ‘We must therefore fight against these limits and not respect linguistic conventions like grammaticality.’
    • ‘Accuracy of grammaticality judgements was much lower for sentences with unreal words than real words.’
    • ‘Although most researchers stress the grammaticality of the majority of bilingual utterances, they assume that the grammatical norms of the two languages in isolation provide the basis for determining what is grammatical.’

Pronunciation

grammaticality

/ɡrəˌmadəˈkalədē//ɡrəˌmædəˈkælədi/