[1] : The Collaborative International Dictionary of English v.0.48

quartic \quar"tic\, n.
   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.
       1913 webster
see also:
quantic 

[2] : The Collaborative International Dictionary of English v.0.48

quartic \quar"tic\, a. l. quartus fourth. mach.
   of the fourth degree.
   1913 webster

[3] : WordNet (r) 2.0

quartic
     n : an algebraic equation of the fourth degree syn: biquadrate,
          biquadratic, fourth power
see also:
biquadrate biquadratic fourth power 

Quartic >> Q Words
Quartic, definition of term: Quartic
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