CONCEPTIONAL

conceptional, ideational, notional

(adjective) being of the nature of a notion or concept; “a plan abstract and conceptional”; “to improve notional comprehension”; “a notional response to the question”

Source: WordNet® 3.1

Etymology

Adjective

conceptional (comparative more conceptional, superlative most conceptional)

Of or relating to conception.

Relating to a concept, idea, or thought. (More often, conceptual.)

Source: Wiktionary

Con*cep"tion*al, a.

Definition: Pertaining to conception.

Source: Webster’s Unabridged Dictionary 1913 Edition