An Etymological Dictionary of Astronomy and Astrophysics

An equation containing unknowns of the fourth power; the general form: ax⁴ + bx³ + cx² + dx + e = 0.

Etymology (EN): From L. quart(us) “fourth” (→ quarter) + → -ic; → equation.

Etymology (PE): hamugeš, → equation; câromân, from cârom “fourth,” from câr, cahâr “four”

• -om “-th” + -ik, → -ic.