substitutional


sub·sti·tu·tion

S0853500 (sŭb′stĭ-to͞o′shən, -tyo͞o′-)n.1. a. The act or process of substituting: the substitution of human workers with robots.b. An instance of this: made several substitutions to the recipe.2. One that is substituted; a substitute; a replacement: proposed drug therapy as a substitution for surgery.
sub′sti·tu′tion·al, sub′sti·tu′tion·ar′y adj.sub′sti·tu′tion·al·ly adv.

substitutional

(ˌsʌbstɪˈtjuːʃənəl) or

substitutionary

adjof or relating to substitution; able to be substituted