Webster
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Webster’s Revised Unabridged Dictionary · 1913

Derivative

De·riv′a·tive (dē·rĭv′ȧ·tĭv), a. [L. derivativus: cf. F. dérivatif.] Obtained by derivation; derived; not radical, original, or fundamental; originating, deduced, or formed from something else; secondary; as, a derivative conveyance; a derivative word.

Derivative circulation, a modification of the circulation found in some parts of the body, in which the arteries empty directly into the veins without the interposition of capillaries. Flint.

— De·riv′a·tive·ly, adv. — De·riv′a·tive·ness, n.

De·riv′a·tive, n. 1. That which is derived; anything obtained or deduced from another.

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.

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.

4. (Med.) An agent which is adapted to produce a derivation (in the medical sense).

5. (Math.) A derived function; a function obtained from a given function by a certain algebraic process.

☞ Except in the mode of derivation the derivative is the same as the differential coefficient. See Differential coefficient, under Differential.

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.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.