The Collaborative International Dictionary
Quintic
Quintic \Quin"tic\, a. [L. quintus fifth, fr. quinque five.] (Alg.) Of the fifth degree or order. -- n. (Alg.) A quantic of the fifth degree. See Quantic.
Wiktionary
quintic
a. (label en mathematics) Of or relating to the fifth degree, such as a quintic polynomial which has the form ax5+bx4+cx3+dx2+ex+f (containing a term with the independent variable raised to the fifth power). n. (label en mathematics) a quintic polynomial: ax5+bx4+cx3+dx2+ex+f
Wikipedia
Usage examples of "quintic".
For the mathematically inclined reader we note that this particular Calabi-Yau space is a real three-dimensional slice through the quintic hypersurface in complex projective four-space.