longissimus

From Latin longissimus.

longissimus (plural longissimi)

1. (anatomy) The muscle lateral to the semispinalis; the longest subdivision of the sacrospinalis that extends forward into the transverse processes of the posterior cervical vertebrae.
   • 1967, University of Missouri - Columbia, Agricultural Experiment Station, Research Bulletin (issues 912-929, page 35)

     Bull carcasses have greater longissimus muscle area per unit weight, less trimmable fat, and, consequently, a higher yield of retailable meat than either steer or heifer carcasses.

longissimus (superlative, feminine longissima, neuter longissimum); first/second declension

1. superlative degree of longus

First/second-declension adjective.

• porta itinerī longissima