unusual or prominent convexity of the abdomen, due to excessive subcutaneous fat, poor muscle tone, or an increase in intraabdominal content.
pro·tu·ber·ant ab·do·men
(prō-tū'bĕr-ănt ab'dŏ-mĕn) Unusual or prominent convexity of the abdomen, due to excessive subcutaneous fat, poor muscle tone, or an increase in intraabdominal content.