(also latissimus dorsi /ˈdɔːsʌɪ/ /ˈdɔːsiː/)
noun (plural latissimi /lɑːˈtɪsɪmʌɪ/ /lɑːˈtɪsɪmiː/)Anatomy
Either of a pair of large, roughly triangular muscles covering the lower part of the back, extending from the sacral, lumbar, and lower thoracic vertebrae to the armpits.
- We measured right and left sides of 4 muscles - sternocleidomastoideus, trapezius, latissimus dorsi, and rectus abdominis - 3 times and averaged the value for each muscle.
- Accessory slips may join the deltoid with infraspinatus, latissimus dorsi, or even teres major.
- Subjects with greater imbalance of muscle stiffness such as latissimus dorsi or trapezius had significantly higher neuroticism and psychoticism scores than did those with lower imbalance.
Early 17th century: modern Latin, from musculus latissimus dorsi, literally 'broadest muscle of the back'.
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