derivative

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de·riv·a·tive

(dĕ-riv'ă-tiv),
1. Relating to or producing derivation.
2. Something produced by modification of something preexisting.
3. Specifically, a chemical compound that may be produced from another compound of similar structure in one or more steps, as in replacement of H by an alkyl, acyl, or amino group.

derivative

/de·riv·a·tive/ (dĕ-riv´ah-tiv) a chemical substance produced from another substance either directly or by modification or partial substitution.

derivative

[dəriv′ətiv]
Etymology: L, derivare, to turn away
anything that originates in another substance or object. For example, organs and tissues are derivatives of the primordial germ cells. Chemical derivatives may be produced to confirm identification of a compound or to aid in the analysis of a compound.

de·riv·a·tive

(dĕ-riv'ă-tiv)
1. Relating to or producing derivation.
2. Something produced by modification of something preexisting.
3. Specifically, a chemical compound produced from another compound in one or more steps, as in replacement of H by an alkyl, acyl, or amino group.

derivative

the result of the calculation (usually with calculus) of the change of one variable with respect to another. Also alludes to the number of 'steps' of calculus required (e.g. acceleration is the second derivative of displacement with respect to time). See also differentiation.

de·riv·a·tive

(dĕ-riv'ă-tiv)
Chemical compound that may be produced from another compound of similar structure in one or more steps.

derivative (dēriv´ətiv),

n a chemical substance that is the result of a chemical reaction.
References in periodicals archive ?
Trophic differentation in Ilyodon, a genus of stream-dwelling goodeid fishes: speciation versus ecological polymorphism.
Theoretical and conceptual support for these propositions can be found in the early integration and differentation arguments by Lawrence and Lorsch (1967) and later expanded upon by Galbraith (1973, 1987).
Proficient colposcopic assessment enables differentation of disease severity.
excluded, but in strange fashion: not radically enough to allow for a secure differentation between subject and object, and yet clearly enough for a defensive position to be established.
Unsatisfactory ratings are extremely rare, so there is virtually no differentation between mediocre and superb teachers.
Thus, Bower and Hilgard (1981) suggested that the breadth of categories into which prior knowledge is organized, the differentation of those categories, and the linkages across them permit individuals to make sense of and, in turn, acquire new knowledge.
The result is a form of program differentation that we call propagation.
Learning,' Bailey concludes, "may resemble a process of growth and differentation,' involving gene regulation, nerve protein synthesis and consequent rerouting of circuitry.
Tissue inhibitor of metalloproteinase-1 induces differentation and an antiapoptotic phenotype in germinal center B cells.
1998) "First clues to the existence of two input languages: pragmatic and lexical differentation in a bilingual child".
The impact of asimilation and differentation needs on perceived group importance and judgments of ingroup size.
DIET DIFFERENTATION AND SPECIES ATTRIBUTION AT TAUNG, SOUTH AFRICA INFERRED FROM LOW-MAGINIFICATION OF DENTAL MICROWEAR FEATURES ON FOSSIL PRIMATES, James W.

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