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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. |
superficies su·per·fi·cies (s&oomacr;'pər-fĭsh'ēz, -fĭsh'ē-ēz')
n. pl. superficies
The outer surface of an area or a body.
External appearance or aspect.