gaviiformes

English Thesaurus

1. large aquatic birds: loons and some extinct forms (noun.animal)

hypernym	:	animal order,
definition	:	the order of animals (noun.animal)

member holonym	:	gaviiform seabird,
definition	:	seabirds of the order Gaviiformes (noun.animal)

member holonym	:	family gavidae, gavidae,
definition	:	loon family (noun.animal)

member meronym	:	aves, class aves,
definition	:	(ornithology) the class of birds (noun.animal)