Learn how to say Notionist correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word notional:
1existing as or based on a suggestion, estimate, or theory; not existing in reality:
notional budgets for hospital and community health services
2 Linguistics denoting or relating to an approach to grammar which is dependent on the definition of terminology (e.g. ‘a verb is a doing word’) as opposed to identification of structures and processes.
late Middle English (in the Latin sense): from obsolete French, or from medieval Latin notionalis ‘relating to an idea’, from notio(n-) ‘idea’ (see notion)