A bird of the family Procellariidae, which originally included all (or most) of the members of the order Procellariiformes but is now restricted to the shearwaters and the typical petrels.
Of, relating to, or designating a procellariid.
Late 19th century; earliest use found in Henry Nottidge Moseley (1844–1891), naturalist. From scientific Latin Procellaria, genus name + -id, after scientific Latin Procellaridae (later Procellariidae), family name. Compare French procellariidés, plural noun.