Noun: substitution ,súb-sti't(y)oo-shun
- An event in which one thing is substituted for another
"the substitution of lost blood by a transfusion of donor blood";
- permutation, transposition, replacement, switch
- The act of putting one thing or person in the place of another
"The substitution of artificial sweeteners for sugar reduced the calorie content";
- exchange, commutation
Derived forms: substitutions
Type of: change, fluctuation, variation
Encyclopedia: Substitution