‖An′nu‐loid″a (�), n. pl. [NL., fr. L. annulus ring + -oid.] (Zoöl.) A division of the Articulata, including the annelids and allied groups; sometimes made to include also the helminths and echinoderms. [Written also Annuloidea.]
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.