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Webster 1913 Edition
Quartic
Quar′tic
,Adj.
[L.
quartus
fourth.] (Mach.)
Of the fourth degree.
Quar′tic
,Noun.
(a)
(Alg.)
A quantic of the fourth degree. See
Quantic
. (b)
(Geom.)
A curve or surface whose equation is of the fourth degree in the variables.