1 any worms of the phylum Annelida, in which the body is divided into segments both externally and internally. The group includes the earthworms, lugworm, ragworm, and leeches
adj
2 of, relating to, or belonging to the Annelida
(C19: from New Latin Annelida, from French annelés, literally: the ringed ones, from Old French annel ring, from Latin anellus, from anulus ring)
♦
annelidan n, adj