Hypertext Webster Gateway: "substitution"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Substitution \Sub`sti*tu"tion\, n. [L. substitutio: cf. F.
substitution.]
1. The act of substituting or putting one person or thing in
the place of another; as, the substitution of an agent,
attorney, or representative to act for one in his absense;
the substitution of bank notes for gold and silver as a
circulating medium.
2. The state of being substituted for another.
3. The office or authority of one acting for another;
delegated authority. [R.] --Shak.
4. (Civil Law) The designation of a person in a will to take
a devise or legacy, either on failure of a former devisee
or legatee by incapacity or unwillingness to accept, or
after him. --Burrill.
5. (Theol.) The doctrine that Christ suffered vicariously,
being substituted for the sinner, and that his sufferings
were expiatory.
6. (Chem.)The act or process of substituting an atom or
radical for another atom or radical; metethesis; also, the
state of being so substituted. See {Metathesis}.
From WordNet (r) 1.7 (wn)
substitution
n 1: an event in which one thing is substituted for another; "the
replacement of lost blood by a transfusion of donor
blood" [syn: {permutation}, {transposition}, {replacement},
{switch}]
2: the act of putting one one thing or person in the place of
another: "he sent Smith in for Jones but the substitution
came too late to help [syn: {exchange}]
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