English

Noun

abdominothoracic arch ‎(plural abdominothoracic archs)

1. (anatomy) The costal arch; anterior and lateral boundary between the abdomen and the thorax.

References

Thomas, Clayton L., editor (1940) Taber's Encyclopedic Medical Dictionary, 5th edition, Philadelphia, PA: F. A. Davis Company, ISBN 0-8036-8313-8, published 1993, page 1