Definition of brachial in English:



  • 1Relating to the arm or to a structure resembling the arm.

    ‘the brachial artery’
    • ‘Distension of the brachial artery during the cardiac cycle was measured as described previously.’
    • ‘Occasionally, the axillary nerve or axillary artery may be injured; rarely, the brachial artery, brachial plexus, or another nerve may be injured.’
    • ‘Angiographic findings include severe distal, segmental occlusive lesions, but the more proximal arteries (below the popliteal and distal to brachial branches) are normal.’
    • ‘Rib, clavicle, brachial plexus, and pulmonary injuries are commonly associated with scapula fractures.’
    • ‘Also a fleshy slip may also arise from the medial border of biceps and pass to the medial intermuscular septum or medial epicondyle over the brachial artery.’
    1. 1.1Zoology Denoting the upper valve of a brachiopod's shell.
      • ‘Acrotretids are usually round with a convex, cap-shaped brachial valve, and a flat pedicle valve.’
      • ‘The prominent beak of the pedicle valve usually overlaps that of the brachial valve, in order to allow the shell to open and close.’
      • ‘This differs from the crural plates described above in that no discrete plates can be discerned connecting to the floor of the brachial valve, and it is also in the form of a later overgrowth.’
      • ‘It has a wide hinge line, and one concave valve, which may be either brachial or pedicle.’
      • ‘A few members of this group have the peculiarity of reflecting rather perfectly in the markings of their brachial valve the surface of the host shell to which the craniacean is attached.’


Late Middle English: from Latin brachialis, from brac(c)hium ‘arm’.