iliocostalis lum·bor·um
| \ -ˌləm-ˈbȯr-əm
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Medical Definition of iliocostalis lumborum
: a muscle that extends from the ilium to the lower ribs and acts to draw the trunk to the same side or to depress the ribs
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“Iliocostalis lumborum.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/iliocostalis%20lumborum. Accessed 23 Jul. 2021.
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