IPA: /ˌpɒstjʊˈleɪʃənl/
KK: /ˌpɑːstʃəˈleɪʃənl/
Relating to or based on a statement or assumption that is accepted as true without proof.
The postulational approach in mathematics relies on accepted truths to build further theories.
Postulational → It is formed from "postulare" (meaning to demand or ask) and the suffix "-al" (meaning relating to). The word "postulational" refers to something that is related to a demand or assertion, often in a theoretical context.
Think of 'demanding' or 'asking' ('postulare') when you hear 'postulational' — it relates to making assertions or demands in a theoretical sense.