The Collaborative International Dictionary of English. 2000.
Metamere — Met a*mere, n. [Pref. meta + mere.] (Biol.) One of successive or homodynamous parts in animals and plants; one of a series of similar parts that follow one another in a vertebrate or articulate animal, as in an earthworm; a segment; a somite. See … The Collaborative International Dictionary of English
Nephridia — Nephridium Ne*phrid i*um, n.; pl. {Nephridia}. [NL., fr. Gr. ? of the kidneys.] (Zo[ o]l. & Anat.) A segmental tubule; one of the tubules of the primitive urinogenital organs; a segmental organ. See Illust. under {Loeven s larva}. [1913 Webster] … The Collaborative International Dictionary of English
Nephridium — Ne*phrid i*um, n.; pl. {Nephridia}. [NL., fr. Gr. ? of the kidneys.] (Zo[ o]l. & Anat.) A segmental tubule; one of the tubules of the primitive urinogenital organs; a segmental organ. See Illust. under {Loeven s larva}. [1913 Webster] … The Collaborative International Dictionary of English
Polygordius — Pol y*gor di*us, n. [NL. See {Poly }, and {Gordius}.] (Zo[ o]l.) A genus of marine annelids, believed to be an ancient or ancestral type. It is remarkable for its simplicity of structure and want of parapodia. It is the type of the order… … The Collaborative International Dictionary of English
