Annelida

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Annelida

 [ah-nel´ĭ-dah]
a phylum of metazoan invertebrates, the segmented worms, including leeches.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

An·nel·i·da

(an'nĕ-lī'dă),
A phylum that includes the segmented or true worms, such as the earthworm.
Farlex Partner Medical Dictionary © Farlex 2012

Annulata

or

Annelida

the ringed or segmented worms. See ANNELID.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005