A leading or drawing off of
water from a stream or source.
The act of receiving anything from a
source; the act of procuring an effect from a cause, means, or
condition, as profits from capital, conclusions or opinions from
evidence.
The act of tracing origin or descent, as
in grammar or genealogy; as, the derivation of a word from an
Aryan root.
The state or method of being derived; the
relation of origin when established or asserted.
That from which a thing is
derived.
That which is derived; a derivative; a
deduction.
The operation of deducing
one function from another according to some fixed law, called the
law of derivation, as the operation of differentiation or of
integration.
A drawing of humors or
fluids from one part of the body to another, to relieve or lessen a
morbid process.
In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 
