Look up substitution in Wiktionary, the free dictionary.

Substitution may refer to:

• Substitution (poetry), a variation in poetic scansion
• Substitution (theatre), an acting methodology

• Chord substitution, swapping one chord for a related one within a chord progression
• Tritone substitution, reinterpreting a chord via a new root note located an augmented fourth or diminished fifth distant from the root of the original interpretation
• "Substitution" (Silversun Pickups song), 2009
• "Substitution" (Purple Disco Machine and Kungs song), 2023

• Base-pair substitution or point mutation, a type of mutation
• Substitution reaction, where a functional group in a chemical compound is replaced by another group
  • Substituent, the atom or atoms that replaces those of the reactant
• Substitution, a process in which an allele arises and undergoes fixation

• Substitution (algebra), replacing occurrences of some symbol by a given value
• Substitution (logic), a syntactic transformation on strings of symbols of a formal language
• String substitution, a mapping of letters in an alphabet to languages
• Substitution of a character in a string, one of the single-character edits used to define the Levenshtein distance
• Substitution cipher, a method of encryption
• Integration by substitution, a method for finding antiderivatives and integrals

• Substitution (economics), switching between alternative consumable goods as their relative prices change
• Attribute substitution, a psychological process thought to underlie a number of cognitive biases and perceptual illusions
• Substitution method, a method of measuring the transmission loss of an optical fiber

• Substitution (law), the replacement of a judge
• Substitution (sport), where a sports team is able to change one player for another during a match
• Substitution therapy or opiate replacement therapy
• Import substitution industrialization, a trade and economic policy
• Penal substitution, a theory of the atonement within Christian theology
• Simultaneous substitution, a practice requiring Canadian television distribution companies to substitute a non-local station signal with the local signal

• Help:Substitution, help performing substitution on Wikipedia pages
• Special:ExpandTemplates, page that shows what will result from substitution
• Wikipedia:Substitution, where, when, how, and what about using substitution on Wikipedia

• Substitute (disambiguation)

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