a state of unconsciousness from which the patient cannot be aroused, even by powerful stimuli. Traumatic brain injuries are the most frequent cause; other causes include severe uncontrolled diabetes mellitus, liver disease, kidney disease, and neurologic conditions. Evaluation of a patient in a coma is comprehensive. The underlying cause should be identified so that appropriate treatment can be initiated.
Dental Care. A veneer is a thin shield of porcelain that is used to cover the front surface of a tooth. Veneers are designed as a permanent way to change or enhance the look of stained, chipped, broken, or undesired teeth. To get a veneer, you'll very likely need to see your dentist at least two times.
Use porcelain in a sentence. LINK / CITE ADD TO WORD LIST. noun. Porcelain is a hard, white non-porous type of ceramic. 1  An example of porcelain is a type of veneers for teeth.2  An example of porcelain is a set of English dinner ware. An example of porcelain is a type of veneers for teeth. 2  An example of porcelain is a set of English dinner ware.