serratus posterior inferior

NOUN
27 LETTERS · STARTS WITH S

serratus posterior inferior is a valid 27-letter word worth 30 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1E1R1R1A1T1U1S1P3O1S1T1E1R1I1O1R1I1N1F4E1R1I1O1R1
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 =30 PTS
DOUBLE WORD → 60TRIPLE WORD → 90
MEANING

What does serratus posterior inferior mean?

NOUN · 1 SENSE
1

A thin quadrilateral muscle at the junction of the thoracic and lumbar regions; acts to counteract the pull of the diaphragm on the ribs to which it is attached.