Definitions for: Costa

[n] any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates)
[n] a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing)

Webster (1913) Definition: Cos"ta (k[o^]s"t[.a]), n. [L., rib. See Coast.]
1. (Anat.) A rib of an animal or a human being.

2. (Bot.) A rib or vein of a leaf, especially the midrib.

3. (Zo["o]l.)
(a) The anterior rib in the wing of an insect.
(b) One of the riblike longitudinal ridges on the exterior
of many corals.

Synonyms: rib

See Also: anatomical structure, bodily structure, body structure, bone, complex body part, costal cartilage, craniate, os, structure, true rib, vertebrate

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