Pronunciation: (noor"ō-ep"i-thē'lē-um, nyoor"-), [key]
—pl. -li•ums, -li•aPronunciation: (-lē-u). [key]
1. Embryol.the part of the embryonic ectoderm that gives rise to the nervous system.
2. Anat.tissue composed of epithelial cells that are specialized to serve a sensory function, as the nasal mucosa and retina.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.