7. (Math.)
Defn: The operation of deducing one function from another according to some fixed law, called the law of derivation, as the of differentiation or of integration.
8. (Med.)
Defn: A drawing of humors or fluids from one part of the body to another, to relieve or lessen a morbid process.
DERIVATIONAL
Der`i*va"tion*al, a.
Defn: Relating to derivation. Earle.
DERIVATIVE
De*riv"a*tive, a. Etym: [L. derivativus: cf. F. dérivatif.]
Defn: 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.
DERIVATIVE
De*riv"a*tive, n.
1. That which is derived; anything obtained or deduced from another.