Ascitic fluid, also known as peritoneal fluid, is a substance that accumulates in the peritoneal cavity, which is the space between the abdominal organs and the abdominal wall. This fluid serves various purposes and can be associated with certain medical conditions. Synonyms for ascitic fluid encompass terms such as peritoneal effusion, abdominal dropsy, and ascites. These synonyms are used interchangeably and refer to the same condition where excess fluid builds up in the abdominal cavity. Ascitic fluid mainly consists of water, electrolytes, and protein, and its presence can indicate underlying health issues such as liver cirrhosis, heart failure, or cancer.