cos·ta 
(kŏstə)
(kŏstə)n. pl. cos·tae (-tē)
Biology
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 the Appendix of Indo-European roots.]
costal adj.
- irresolvable
- irrespective of
- irrespirable
- irresponsibility
- irresponsible
- irresponsibleness
- irresponsibly
- irresponsive
- irresponsively
- irresponsiveness
- irretrievability
- irretrievable
- irretrievableness
- irretrievably
- irreverence
- irreverent
- irreverently
- irreversibility
- irreversible
- irreversibleness
- irreversibly
- irrevocability
- irrevocable
- irrevocableness
- irrevocably