derivative

In calculus, a branch of mathematics, the derivative is a measurement of how a function changes when the values of its inputs change. Loosely speaking, a derivative can be thought of as how much a quantity is changing at some given point. For example, the derivative of the position of a car at some point in time is the velocity, or speed, at which that car is traveling (conversely the integral of the velocity is the car's position or distance traveled).
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adj. repulsive, distasteful

adj. derivative, obtained from another source, derived, borrowed

(n.)
That which is derived; anything obtained or deduced from another.
  

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

(n.)
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.
  

(n.)
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.
  

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

(n.)
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.
  

(a.)
Obtained by derivation; derived; not radical, original, or fundamental; originating, deduced, or formed from something else; secondary; as, a derivative conveyance; a derivative word.