costa

• Substantif désignant une structure en forme de côte chez les plantes ou les animaux, telle que la nervure médiane d'une feuille, une nervure épaisse de l'aile d'un insecte, ou l'une des 12 paires d'os courbés partant de la colonne vertébrale chez l'homme et la plupart des vertébrés.

A noun referring to a riblike structure in plants or animals, such as a middle rib of a leaf, a thickened vein of an insect wing, or one of the 12 pairs of curved bones extending from the spine in humans and most vertebrates.

1. Rib (anatomy)C1formalscientific

   Any of the 12 pairs of curved bones extending from the spine to or toward the sternum in humans and similar bones in most vertebrates.

   Côte (anatomie)

   • The patient fractured a costa in the accident.
   • The human skeleton includes 12 pairs of costae.
   • The doctor examined the costa for signs of damage.

   Synonymesrib

2. Rib-like structure (biology)C2formalscientific

   A riblike part of a plant or animal, such as the middle rib of a leaf or a thickened vein of an insect wing.

   Côte (biologie)

   • The costa of the leaf provides structural support.
   • In entomology, the costa is a prominent vein in the insect wing.
   • The plant's costa is clearly visible under the microscope.

   Synonymesmidribnerveribvein