Annulosa
An´nu`lo´sa
n. pl. | 1. | (Zool.) 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. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.