Annuloid :: Annuloid (a.) Of or pertaining to the Annuloida.
Annuloida :: Annuloida (n. pl.) A division of the Articulata, including the annelids and allied groups; sometimes made to include also the helminths and echinoderms..
Annulosa :: Annulosa (n. pl.) A division of the Invertebrata, nearly equivalent to the Articulata. It includes the Arthoropoda and Anarthropoda. By some zoologists it is applied to the former only..