Main definitions of carina in US English:

: carina1Carina2

carina1

noun

Biology
  • 1A keel-shaped structure.

    • ‘Adcarinal ridges flank the carina on the platform and tend to have relatively short anterior extensions with only slight anterior flaring.’
    • ‘This combined system of the exodermic deck and steel box girders resulted in a clean, uncluttered structure with smooth lines that complement the carina piers and segmental concrete approaches.’
    1. 1.1 The ridge of a bird's breastbone, to which the main flight muscles are attached.
      • ‘Denticles on both anterior and posterior carinae are approximately equivalent in size.’
      • ‘However, one of the crests seems to merge with the carina while the other simply peters out. On the image at left, that would be just below the humeral facet and on the hidden, reverse face of the bone.’
      • ‘The extent and prominence of the carinae, the carina on the central node, reticulation, and posterior node are characteristic of the species.’
    2. 1.2 A cartilage situated at the point where the trachea (windpipe) divides into the two bronchi.
      • ‘The operator should first view the upper airway and nasopharynx, followed by the vocal cords, trachea and carina.’
      • ‘They are concentrated in the carina and primary bronchi, and are also believed to be cough receptors.’
      • ‘Evaluation of the coronary arteries is performed with images from near the carina of the lung to the bottom of the heart.’
      • ‘Bronchoscopy revealed a normal distal trachea, carina and right mainstem bronchus.’
      • ‘The trachea, carina, right and left lobar and segmental bronchi were examined and were normal.’

Origin

Early 18th century: from Latin, ‘keel’.

Pronunciation

Main definitions of carina in US English:

: carina1Carina2

Carina2

proper noun

Astronomy
  • 1A southern constellation (the Keel) partly in the Milky Way, originally part of Argo. It contains the second brightest star in the sky, Canopus.

    1. 1.1as genitive Carinae /kəˈrīnē/ Used with preceding letter or numeral to designate a star in the constellation Carina.
      ‘the star Beta Carinae’

Origin

Latin.

Pronunciation