Abranchiata
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abranchiato
adj. abranchial, abranchiate, having no gill (Zoology)

Webster's Revised Unabridged Dictionary (1913)Download this dictionary
Abranchiata
(n. pl.)
A group of annelids, so called because the species composing it have no special organs of respiration.
  

Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About