aphasmidia

English Thesaurus

1. one of two subgroups of Nematoda used in some classification systems (noun.animal)

hypernym	:	class,
definition	:	(biology) a taxonomic group containing one or more orders (noun.group)

member meronym	:	aschelminthes, nematoda, phylum aschelminthes, phylum nematoda,
definition	:	unsegmented worms: roundworms; threadworms; eelworms (noun.animal)