Quartic is a 7 letter English word. It's valid Scrabble word worth 18 points. It's valid Words with friends word worth 20 points.
You can make 127 anagrams from letters in quartic (aciqrtu).
1855-60; Latin quart(us) fourth + -ic
We may further consider the inflections and double tangents, as well in general as in regard to cubic and quartic curves.
A curve of the third order is called a cubic; one of the fourth order a quartic; and so on.