costa

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cos·ta

 (kŏs′tə)
n. pl. cos·tae (-tē) Biology
A rib or a riblike part, such as the midrib of a leaf or a thickened anterior vein or margin of an insect's wing.

[Latin; see kost- in Indo-European roots.]

cos′tal adj.

costa

(ˈkɒstə)
n, pl -tae (-tiː)
1. (Anatomy) the technical name for rib11
2. (Biology) a riblike part, such as the midrib of a plant leaf
[C19: from Latin: rib, side, wall]
ˈcostal adj
ˈcostally adv

cos•ta

(ˈkɒs tə, ˈkɔ stə)

n., pl. cos•tae (ˈkɒs ti, ˈkɔ sti)
1. a rib, riblike structure, or ridge.
2.
a. Also called cos′tal vein′. a vein, usu. marginal, in the front part of the wing of certain insects.
b. Also called cos′tal mar′gin. the anterior edge or border of the wing of certain insects.
[1865–70; < Latin: rib, side. compare coast]

costa

- A rib or riblike structure.
See also related terms for rib.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.costa - a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing)
anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"
2.costa - 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)
craniate, vertebrate - animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium
bone, os - rigid connective tissue that makes up the skeleton of vertebrates
true rib - one of the first seven ribs in a human being which attach to the sternum
costal cartilage - the cartilages that connect the sternum and the ends of the ribs; its elasticity allows the chest to move in respiration