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| a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells. |
| (used as a nonsense word by children to express approval or to represent the longest word in English.) |
keratoplasty ker·a·to·plas·ty (kěr'ə-tō-plās'tē)
n.
Surgical replacement of an opaque portion of the cornea with a piece of cornea having the same size and shape. Also called corneal graft.