sextic sic (sekstik)

and n. [L. sext us, sixth, +-ic.] I. a. Of the sixth degree; of the sixth order.-Sextic curve. See curve. II. n. A quantic, or equation, of the sixth degree; also, a curve of the sixth order.-Anharmonic-ratio sextic, the equation of the sixth degree which gives the six anharmonic ratios of the roots of an equation of the fourth degree. sextile (seks'til), a. [= F. Sp. Pg. sextil = It. sestile, That planet [the moon] receives the dusky light we discern in its sextile aspect from the earth's benignity. Glanville, Vanity of Dogmatizing, xviii. And yet the aspect is not in trine or sextile , But in the quartile radiation Or tetragon, which shows an inclination Averse, and yet admitting of reception.