[ kos-tl, kaws-tl ]
/ ˈkɒs tl, ˈkɔs tl /


Anatomy. pertaining to the ribs or the upper sides of the body: costal nerves.
Botany, Zoology. pertaining to, involving, or situated near a costa.

Nearby words

  1. costa rica,
  2. costa rican,
  3. costa, lúcio,
  4. costae,
  5. costain,
  6. costal angle,
  7. costal arch,
  8. costal cartilage,
  9. costalgia,
  10. costally

Origin of costal

1625–35; < Medieval Latin costālis of the ribs, equivalent to Latin cost(a) rib, side + -ālis -al1

Related formscos·tal·ly, adverbpost·cos·tal, adjectivepre·cos·tal, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for costal

Word Origin and History for costal



"pertaining to the ribs," 1630s, from French costal (16c.), from Medieval Latin costalis, from costa "a rib" (see coast (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper