[ suhb-sti-toot, -tyoot ]
/ ˈsʌb stɪˌtut, -ˌtyut /
a person or thing acting or serving in place of another.
(formerly) a person who, for payment, served in an army or navy in the place of a conscript.
Grammar. a word that functions as a replacement for any member of a class of words or constructions, as do in He doesn't know but I do.
verb (used with object), sub·sti·tut·ed, sub·sti·tut·ing.
to put (a person or thing) in the place of another.
to take the place of; replace.
Chemistry. to replace (one or more elements or groups in a compound) by other elements or groups.
verb (used without object), sub·sti·tut·ed, sub·sti·tut·ing.
to act as a substitute.
of or relating to a substitute or substitutes.
composed of substitutes.
Origin of substitute
sub·sti·tut·a·ble, adjectivesub·sti·tut·a·bil·i·ty, nounsub·sti·tut·er, nounsub·sti·tut·ing·ly, adverb
sub·sti·tu·tion, nounsub·sti·tu·tion·al, sub·sti·tu·tion·ar·y [suhb-sti-too-shuh-ner-ee, -tyoo-] /ˌsʌb stɪˈtu ʃəˌnɛr i, -ˈtyu-/, adjectivesub·sti·tu·tion·al·ly, adverbin·ter·sub·sti·tut·a·bil·i·ty, nounin·ter·sub·sti·tut·a·ble, adjectivein·ter·sub·sti·tu·tion, nounnon·sub·sti·tut·ed, adjectivenon·sub·sti·tu·tion, nounnon·sub·sti·tu·tion·al, adjectivenon·sub·sti·tu·tion·al·ly, adverbnon·sub·sti·tu·tion·ar·y, adjectivepre·sub·sti·tute, verb (used with object), pre·sub·sti·tut·ed, pre·sub·sti·tut·ing.pre·sub·sti·tu·tion, nounpro·sub·sti·tu·tion, adjectiveun·sub·sti·tut·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for intersubstitutability
/ (ˈsʌbstɪˌtjuːt) /
(often foll by for) to serve or cause to serve in place of another person or thing
chem to replace (an atom or group in a molecule) with (another atom or group)
logic maths to replace (one expression) by (another) in the context of a third, as replacing x + y for x in 3 x = k gives 3 x + 3 y = k
- a person or thing that serves in place of another, such as a player in a game who takes the place of an injured colleague
- (as modifier)a substitute goalkeeper Often shortened to: sub
grammar another name for pro-form
Canadian another name for supply teacher
nautical another word for repeater (def. 5)
(formerly) a person paid to replace another due for military service
Derived Formssubstitutable, adjectivesubstitutability, noun
Word Origin for substitute
C16: from Latin substituere, from sub- in place of + statuere to set up
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