Definition of "substitution" []

• The act or an instance of substituting. (noun)
• The state of being substituted. (noun)
• One that is substituted; a replacement. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "It must, however, be remarked that the term substitution would be preferable to conversion."
• "In fact, on more than one occasion, I've heard "euthanize" as a pejorative substitution from the anti-assisted-suicide side of the argument."
• "Although purists would disagree, this substitution is a far better alternative then foregoing the dish, especially if you like goat."