Definition of Neilian in US English:

Neilian

adjective

Mathematics
  • 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.

Pronunciation

Neilian

/ˈniːlɪən/