adj m+f (protuberância+al) Relativo a protuberância.
Vogais: oueaia
Consoantes: prtbrncl
compatricial, equifacial, maxilofacial, glacial, geopotencial, superespecial, referencial, prelacial, monoglacial, equinocial, ocipicial, reverencial, oncial, ciberespacial, amarcial.