transversus abdominis

noun
trans·​ver·​sus ab·​dom·​i·​nis | \ tran(t)s-ˈvər-səs-əb-ˈdäm-ə-nəs How to pronounce transversus abdominis (audio) \

Medical Definition of transversus abdominis

: a flat muscle with transverse fibers that forms the innermost layer of the anterolateral wall of the abdomen and ends in a broad aponeurosis which joins that of the opposite side at the linea alba with its upper three fourths passing behind the rectus abdominis muscle and the lower fourth in front of it and that acts to constrict the abdominal viscera and assist in expulsion of the contents of various abdominal organs (as in defecation, vomiting, and childbirth)

Learn More about transversus abdominis

Cite this Entry

“Transversus abdominis.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/transversus%20abdominis. Accessed 25 Oct. 2020.

Comments on transversus abdominis

What made you want to look up transversus abdominis? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Namesakes Word Quiz

  • a citrus fruit possibly named after a person
  • Which of the following is a fruit named after a Moroccan seaport?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!