Latissimus-dorsi definition

lə-tĭsə-məs dôrsī
Frequency:
Either of two broad, flat, triangular muscles with origin from the spinous processes of the lower thoracic and lumbar vertebrae, the sacrum, and the iliac crest, that insert into the humerus and whose action adducts, medially rotates, and extends the arm.
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Either of the large, wide, triangular muscles, one on each side of the back, connecting the lower and central spine with the arm: it helps rotate, extend, and adduct the arm.
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Either of two broad, flat, triangular muscles with origin from the spinous processes of the lower thoracic and lumbar vertebrae, the sacrum, and the iliac crest, that insert into the humerus and whose action adducts, medially rotates, and extends the arm.
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(anatomy) Either of the larger, flat, dorso-lateral muscles on the trunk, posterior to the arm, and partly covered by the trapezius on its median dorsal region.
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Other Word Forms

Noun

Singular:
latissimus-dorsi
Plural:
latissimi-dorsi

Origin of latissimus-dorsi

  • New Latin lātissimus dorsī Latin lātissimus superlative of lātus wide Latin dorsī genitive of dorsum back

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin lātissimus (“widest, broadest"), superlative oflātus (“wide, broad"), + dorsÄ«, genitive of dorsum (“the back").

    From Wiktionary