Definition of true rib in US English:

true rib


  • A rib which is attached directly to the breastbone.

    Compare with floating rib
    • ‘The top seven pairs of ribs are called true ribs since they connect directly to the sternum.’
    • ‘The Capsular Ligament surrounds the joints formed between the cartilages of the true ribs and the sternum.’
    • ‘It is extremely rare to find an additional rib or pair of ribs in both the cervical and lumbar regions at the same time. Eight true ribs have been observed.’
    • ‘These bones are slightly shorter than the true ribs and are connected to the spine in back.’
    • ‘Instead, costal cartilage attaches these ‘false ribs’ to the last pair of true ribs.’