EntityQ225565· pop 21· linked from 3 articlesSubstitutionSign in to saveSubstitution may refer to:Article9 sectionsContentsArts and mediaMusicScience and mathematicsBiology and chemistryMathematics and computingOther uses in scienceOther usesWithin WikipediaSee alsoSubstitution may refer to:==Arts and media== Substitution (poetry), a variation in poetic scansion Substitution (theatre), an acting methodologyRead full article (9 paragraphs)ConnectionssubstitutionEntitysubstitution reactionEntity