IPA: /ˌprɒpəˈzɪʃənl/
KK: /prəˈpɒzɪʃənl/
Connected to statements that can be true or false, often used in logic and mathematics.
In logic, a propositional statement can be evaluated as either true or false.
Propositional → It is formed from "propositio" (from Latin, meaning a proposal or statement) and the suffix "-al" (meaning pertaining to). The word "propositional" refers to something that pertains to a proposal or statement, particularly in logic and philosophy.
Think of a 'proposal' ('propositio') that relates to a statement or idea — that's what 'propositional' means.