Neilian
/ˈniːlɪən/Mathematics
adjective
Designating a parabola having an equation of the form ax 2 = y 3; a semicubical parabola.
Origin
Early 18th century; earliest use found in John Harris (c1666–1719), writer and lecturer on science. From the name of William Neile, English mathematician, who rectified such a parabola in 1657 + -ian.