Derivative

De*riv"a*tive

, n. 1. That which is derived; anything obtained or deduced from another.
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2. (Gram.) A word formed from another word, by a prefix or suffix, an internal modification, or some other change; a word which takes its origin from a root.
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3. (Mus.) A chord, not fundamental, but obtained from another by inversion; or, vice versa, a ground tone or root implied in its harmonics in an actual chord.
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4. (Med.) An agent which is adapted to produce a derivation (in the medical sense).
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5. (Math.) A derived function; a function obtained from a given function by a certain algebraic process.
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Except in the mode of derivation the derivative is the same as the differential coefficient. See Differential coefficient, under Differential.
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6. (Chem.) A substance so related to another substance by modification or partial substitution as to be regarded as derived from it; thus, the amido compounds are derivatives of ammonia, and the hydrocarbons are derivatives of methane, benzene, etc.
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Tue 18th December 2018