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| a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells. |
| an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language. |
neuroepithelium neu·ro·ep·i·the·li·um (n&oobreve;r'ō-ěp'ə-thē'lē-əm, ny&oobreve;r'-)
n.
The part of the embryonic ectoderm that develops into the nervous system.
The highly specialized epithelial cells of sensory organs such as the eye and nose.