IPA: /ˌdɪsɪplɪˈnærɪti/
KK: /ˌdɪsɪplɪˈnærɪti/
The quality or state of being related to a specific academic field or discipline.
The study of interdisciplinarity has gained importance in modern education.
Disciplinarity is formed from "disciplin" (from Latin "disciplina", meaning instruction or training) and "-arity" (a suffix used to form nouns indicating a state or condition). The word refers to the state or condition of being related to a particular discipline or field of study.
Think of 'discipline' as a form of 'instruction' and '-arity' indicating a state, so 'disciplinarity' means the state of being related to a specific area of study.