[kos-tuh, kaw-stuh] /ˈkɒs tə, ˈkɔ stə/

noun, plural costae
[kos-tee, kaw-stee] /ˈkɒs ti, ˈkɔ sti/ (Show IPA)
a rib or riblike part.
the midrib of a leaf in mosses.
a ridge.

noun (pl) -tae (-tiː)
the technical name for rib1 (sense 1)
a riblike part, such as the midrib of a plant leaf

Spanish costa “coast,” from same Latin source as English coast (n.). Used in Britain from 1960s in jocular formations (costa geriatrica, costa del crime, etc.) in imitation of the names of Spanish tourist destinations.

costa cos·ta (kŏs’tə)
n. pl. cos·tae (-tē)

cos’tal adj.
Plural costae (kŏs’tē)
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.


Read Also:

  • Costain

    [kos-teyn] /ˈkɒs teɪn/ noun 1. Thomas Bertram, 1885–1965, U.S. novelist, historian, and editor, born in Canada.

  • Costal

    [kos-tl, kaws-tl] /ˈkɒs tl, ˈkɔs tl/ adjective 1. Anatomy. pertaining to the ribs or the upper sides of the body: costal nerves. 2. Botany, Zoology. pertaining to, involving, or situated near a . adj. “pertaining to the ribs,” 1630s, from French costal (16c.), from Medieval Latin costalis, from costa “a rib” (see coast (n.)).

  • Costal angle

    costal angle n. See angle of rib.

  • Costal arch

    costal arch n. The portion of the lower opening of the chest formed by the cartilages of the seventh to tenth ribs.

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