Succeeding next in order
to the first; of second place, origin, rank, etc.; not primary;
subordinate; not of the first order or rate.
Acting by deputation or delegated
authority; as, the work of secondary hands.
Possessing some quality, or
having been subject to some operation (as substitution), in the second
degree; as, a secondary salt, a secondary amine, etc.
Cf. primary.
Subsequent in origin; -- said
of minerals produced by alteration or deposition subsequent to the
formation of the original rock mass; also of characters of minerals
(as secondary cleavage, etc.) developed by pressure or other
causes.
Pertaining to the
second joint of the wing of a bird.
Dependent
or consequent upon another disease; as, Bright's disease is often
secondary to scarlet fever.
In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 
