rhamphoid

English

Etymology

Borrowed from Ancient Greek ῥάμφος (rhámphos, “beak”) +‎ -oid.

Adjective

rhamphoid (not comparable)

1. (mathematics) Of a cusp: defined by the equation $(y-x^{2})^{2}=x^{5}$, which is parametrized by $(t^{2},t^{4}+t^{5})$; having two branches with concavity in the same direction.