costa
A rib or a rib-like structure in anatomy.
[C] Countable
pl: costae
This term is primarily used in medical, anatomical, and biological contexts to describe the ribs of the thoracic cage. It carries a clinical and precise tone, distinguishing it from the common word rib which is used in everyday conversation or culinary contexts.
In a broader biological sense, it can refer to the structural veins in a leaf or the supporting ribs of an insect wing. The word evokes an image of a curved, supportive beam that provides a framework for a larger organ or structure.
Used to count individual ribs in a skeletal system or the specific veins in a plant leaf.