annelid (n.) Look up annelid at Dictionary.com
"segmented worm," 1834, from French annélide, source of the phylum name Annelida, coined 1801 in Modern Latin by French naturalist J.B.P. Lamarck (1744-1829), from annelés "ringed ones" (from Latin anulus "little ring," a diminutive of anus "ring;" see anus) + Greek eidos "form, shape" (see -oid).