“belly,” “abdomen,” “lower belly” — anatomical combining form
The word entered English in the 1400s as abdomen (noun), borrowed from Old French abdomen, from Latin abdomen, abdominis — literally “swollen belly” (possibly from ab- “away from” + doma “dwelling,” or from a root meaning “to swell”). The adjective abdominal appeared in the 1550s. The root abdomen (“belly”) connects abdomin- to the entire abdominal and pelvic roots: abdominocentesis (abdomin- + centesis → puncture of the abdomen), abdominoplasty (abdomin- + -plasty → surgical reshaping of the abdomen), and abdominopelvic (abdomin- + pelvis → pertaining to the abdomen and pelvis). The combining formabdomin- is highly productive in surgery, radiology, and gynecology: e.g., abdominocentesis, abdominoperineal, abdominopelvic, and abdominocystoplasty.