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单词 substitution
释义

Example sentences from the Web for substitution

substitution

/ (ˌsʌbstɪˈtjuːʃən) /
SEE SYNONYMS FOR substitution ON THESAURUS.COM

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 instance an expression so derived from another

Words nearby substitution

substantivize, substation, substernal goiter, substituent, substitute, substitution, substitution cipher, substitution product, substitution reaction, substitution therapy, substitution transfusion
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

Medical 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.
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