carina

• اسم يشير إلى أي من التراكيب أو الحواف العظمية أو النباتية الشبيهة بعارضة السفينة، مثل العارضة البارزة في عظم صدر الطيور أو التركيب المتكوّن من التحام بتلات زهرة البازلاء.

A noun referring to any of various keel-shaped structures or ridges, such as the ridge on the breastbone of a bird or the structure formed by the fused petals of a pea blossom.

1. Keel-shaped structure in anatomyC1formalscientific

   A keel-like ridge or structure, especially the prominent ridge on the breastbone (sternum) of birds to which flight muscles attach.

   بنية عظمية على شكل عارضة في علم التشريح

   • The carina of a bird's sternum provides a large surface area for flight muscle attachment.
   • In many birds, the carina is highly developed to support powerful wing movements.
   • The fossil showed a well-preserved carina, indicating the species was capable of flight.

   المرادفاتkeel

2. Keel of a flowerC1formalscientific

   The fused, boat-shaped lower petals of a pea or bean flower (Fabaceae family).

   زورق الزهرة

   • The carina of a sweet pea flower encloses the reproductive organs.
   • Botanists often examine the carina to identify different legume species.
   • The carina is one of the five petals in a typical papilionaceous flower.

   المرادفاتkeel