That which is derived; anything obtained or deduced from
another.
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.
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.
An agent which is adapted to
produce a derivation (in the medical sense).
A derived function; a
function obtained from a given function by a certain algebraic
process.
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.
In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 
