longissimus
lon·gis·si·mus
noun \län-ˈjis-i-məs\plural lon·gis·si·mi \-ˌmī\
Definition of LONGISSIMUS
: the intermediate division of the sacrospinalis muscle that consists of the longissimus capitis, longissimus cervicis, and longissimus thoracis; also : any of these three muscles








