Nearby words

  1. substantive right,
  2. substantivize,
  3. substation,
  4. substernal goiter,
  5. substituent,
  6. substitution,
  7. substitution cipher,
  8. substitution product,
  9. substitution reaction,
  10. substitution therapy

Origin of substitute

1350–1400; Middle English < Latin substitūtus (past participle of substituere to put in place of), equivalent to sub- sub- + -stitū-, combining form of statū-, past participle stem of statuere (see substituent) + -tus past participle suffix

Related forms
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for substitution


British Dictionary definitions for substitution

substitution

/ (ˌsʌbstɪˈtjuːʃən) /

noun

the act of substituting or state of being substituted
something or someone substituted
maths the replacement of a term of an equation by another that is known to have the same value in order to simplify the equation
maths logic
  1. the uniform replacement of one expression by another
  2. substitution instancean expression so derived from another

substitute

/ (ˈsʌbstɪˌtjuːt) /

verb

noun

Derived Formssubstitutable, adjectivesubstitutability, noun

Word Origin for substitute

C16: from Latin substituere, from sub- in place of + statuere to set up

usage

Substitute is sometimes wrongly used where replace is meant: he replaced (not substituted) the worn tyre with a new one

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for substitution
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for substitution

substitution

[ sŭb′stĭ-tōōshən ]

n.

The replacement of an atom or group of atoms in a compound by another atom or group of atoms.
An unconscious defense mechanism by which the unacceptable or unattainable is replaced by something more acceptable or attainable.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.