D defs.my
Entry 1 sense Webster, 1913

Definitional

· Def·i·ni·tion·al · IPA /[ˌdɛfɪˈnɪʃənəɫ]/
01 a. Relating to definition; of the nature of a definition; employed in defining.
  1. 1.
    Relating to definition; of the nature of a definition; employed in defining.