1 However, discomfort in the abdomen for any reason also may cause belching. 2  Therefore, belching does not always indicate the presence of excessive gas in the stomach. 3  Bloating is the subjective feeling that the abdomen is full but does not necessarily mean that the abdomen is enlarged.
caustic(Noun) Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic. caustic(Noun) The envelope of reflected or refracted rays of light for a given surface or object.
The word derives from the Ancient Greek hypo meaning under and caust-, meaning burnt (as in caustic). The Roman architect Vitruvius, writing about the end of the 1st century B.C., attributes their invention to Sergius Orata, but this is not fully confirmed.