musculus serratus posterior mus·cu·lus·serratusposterior uncommon noun 1. skeletal muscle that draws the rib cage backward and downward Synonymsposterior serratus muscleserratus posteriormusculus serratus posterior Related words Broader terms serratus Narrower terms serratus posterior inferiorserratus posterior superior WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
