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Definition of Archiannelida
1. Noun. A class of Annelida.
Exact synonyms: Class Archiannelida
Group relationships: Annelida, Phylum Annelida
Member holonyms: Archiannelid
Generic synonyms: Class
Group relationships: Annelida, Phylum Annelida
Member holonyms: Archiannelid
Generic synonyms: Class
Definition of Archiannelida
1. n. pl. A group of Annelida remarkable for having no external segments or distinct ventral nerve ganglions.
Medical Definition of Archiannelida
1.