costa plural
cos·ta
The plural form of costa is costae
C cDefinitions
- noun plural costa a rib or riblike part. 1
- noun plural costa the midrib of a leaf in mosses. 1
- noun plural costa a ridge. 1
- noun plural costa Entomology. Also called costal vein. a vein, usually marginal, in the anterior portion of the wing of certain insects. Also called costal margin. the anterior edge or border of the wing of certain insects. 1