iliocostalis
(redirected from Iliocostalis thoracis)Also found in: Medical.
iliocostalis
[‚il·ē·ō‚kä′sta·ləs] (anatomy)
The lateral portion of the erector spinal muscle that extends the vertebral column and assists in lateral movements of the trunk.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.