The act or process of substituting an atom or radical for another atom or radical; metathesis; also, the state of being so substituted. See Metathesis.

in oral reading, the replacing of one or more words in the text with another word or words, one of several types of errors commonly reported in testing oral reading.

The appointment of a person to act in the place and stead of another.

The removal of a harmful agent from a process and its replacement with an agent that is less harmful to health.

the replacement of an atom or group of atoms by another atom or group of atoms.

The sale of one security in an account to use the proceeds to pay for the purchase of another security on the same trade date.

The method of encryption involving replacing one letter with another. For example, the word DOG could become EPH, by moving each letter forward one position in the alphabet.

The ability of a lender of securities to recall them from a borrower and replace them with other securities of the same type and value.[ ] TERM REPO A repo with a maturity of more than one day after its value date.

The appointment of a person to act in place of, or for, another.

Replacing one thing with another - see the substitution chapter.

A defense mechanism, operating unconsciously, by which an unattainable or unacceptable goal, emotion, or object is replaced by one that is more attainable or acceptable.

substitution reaction. A reaction in which an atom or fragment within a molecule is replaced with another.

Replacing the fictional elements of the scene with your own personal choices.

Given MPFNs A,B,C, it may be possible to form a new MPFN D by noting the prime powers that change in going from the factorization of A to the factorization of B, and substituting these changes in the factorization of C. In order to produce a MPFN, the following conditions must hold: every prime power in A which does not exactly divide B must exactly divide C, every prime in B that does not divide A must not divide C, and, if index(A) != index(B), then index(C)*(index(B)/index(A)) must be an integer. If these conditions hold, D = C*(B/A) and index(D) = index(C)*(index(B)/index(A)). A common substitution in small MPFNs involves replacing 19^2 127 by 19^4 151 911; the index is unchanged.

an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood"

the act of putting one thing or person in the place of another: "he sent Smith in for Jones but the substitution came too late to help"

a function that replaces variables with other expressions

a mutation that exchanges one base for another (i

a reaction, either elementary or stepwise, in which one atom or group in a molecular entity is replaced by another atom or group

a replacement of a class required for completion of a degree or certificate with another class. The substitution can be granted to a student with a disability if the student's disability documentation supports the need for a class substitution AND the substitution does not alter an essential or necessary element of the program.

The replacement of sounds, syllables, words, clauses, phrases, etc. by related or closely-related forms; see reformulation.

A method of solving equations in which a variable of one equation is replaced by an equivalent expression in terms of other variables.

Replacing or covering valid target area with invalid target area (in Foil and Saber only). Hits made on such a substituted surface may be scored as valid.

Putting a player into the game as a substitute for another. For example, a play requiring a very fast player may cause the coach to bring out one player and replace him with another, faster player. There is quite a bit of substituting in football, especially with special teams.

The ability of a lender of general collateral to recall securities from a borrower and replace them with other securities of the same value.

When one morpheme or letter is used in place of another as when reading coming for come or breakfast for breaking.

A method of solving systems of equations by replacing one variable with another variable or variable expression that is equal to it.

A type of mutation in which one base is substituted for another.

Replacing particularly hazardous chemicals or work processes by safer ones

occurs when a player comes off the bench to replace a player coming out of the game; can be made at any time and play does not need to stop.

in reading, spelling,or math, interchanging a given letter, number, or word for another, e.g., sereal for cereal.

Enciphering by replacing one letter by another.

Replacement of one nucleotide in a DNA sequence by another nucleotide or replacement of one amino acid in a protein by another amino acid.

Interchanging a given letter, number, or word for another, as in reading, spelling, or math, (eg, "sereal" for "cereal").

In a program such as ELIZA, using part of the user's input sentence to produce response. In general, replacing part of a string of words or other symbols by different symbols, depending on context.

Replacement of one player on the field with another player not on the field; FIFA rules allow only 3 substitutions per game.

The replacement of one insurer by another, as where the first ceases to underwrite.

Replacement of one player on the field with another player not on the field; teams are allowed three substitutions per game.

replacement of one base by another in DNA, leading to a mutation in the genome.

the section called “Substitution”, the section called “Replacing parts of variable names

Replacement of a course, stipulated in the calendar, by another course, with the approval of the Operations Committee

Avoiding to use a hazardous substance by replacing it with another substance (a substitute) or by changing production methods.

Substitution in the context of organic chemistry has the general meaning of replacing an atom, a functional group, or a substituent in a molecule.

a mapping from the set of variables V to the set ( V ) By j s we denote the restriction of to the set of variables in the syntactic object s

a mapping from type parameters to types

a mapping from variables to terms (of the appropriate sorts )

a pair of finite maps

In general, even restricted to mathematics, the term substitution can have several meanings. In connection with tiling s, it describes a simple but powerful method to produce tilings with many interesting properties. The main idea is to use a finite set of building blocks {T1, T2 ... Tm} (the prototile s), an expanding linear map Q (the inflation factor) and a rule, how to dissect each scaled tile QTi into copies of the original prototile s T1, T2...Tm. This information can be encoded in terms of parametrized tiles and affine maps (see example below), or, more appealing, in a diagram. In our encyclopedia, we use the latter method. Essentially, from such a diagram one can extract all needed information about the substitution. An important object in this context is the substitution matrix, which contains quite a lot information about the corresponding tilings.

A process of switching or exchanging values, often plugging in a numerical value for a variable.

An appraisal principle that states that the maximum value of a property tends to be set by the cost of purchasing an equally desirable and valuable substitute property, assuming that no costly delay is encountered in making the substitution.

In valuing real estate, substitution is the principle that the market value of a property can be relatively accurately estimated by determining market value of similar properties in the general vicinity. By substitution, an appraiser can ascertain the market value of a piece of real estate by analyzing the sales prices of comparable units in the neighborhood sold in the recent past.

The principle by which CME Clearing becomes the buyer to every seller and the seller to every buyer upon the successful matching of two trade records or upon the successful completion of initial settlement for ex-pit transactions.