Wiktionary
n. (context medical English) Condition where the abnormally relaxed anterior wall of the abdomen hangs over the pubis.(reference-book last = first = authorlink = coauthors = editor =Thomas, Clayton L. others = title =Taber's Encyclopedic Medical Dictionary origdate = origyear = 1940 origmonth = url = format = accessdate = accessyear = accessmonth = edition = 5th date = year =1993 month = publisher =F. A. Davis Company location =Philadelphia, PA language = id = doi = isbn =0-8036-8313-8 lccn = ol = pages =1 chapter = chapterurl = quote =)
Usage examples of "pendulous abdomen".
The snout hung below its disgusting, pendulous abdomen, and the entire fearsome apparition was coated with green slime and poisonous-looking growths, covering what looked like razor-sharp scales.
Over the six miles I managed to build up a comfortable picture of a soft-eyed little colt with pendulous abdomen and over-long hair.