from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having no ribs or nerves.
from the GNU version of the Collaborative International Dictionary of English
- adj. Having no ribs or nerves; -- said of a leaf.
from The Century Dictionary and Cyclopedia
- In botany, not costate; without ribs.
- In zoology: Having no costæ, in general; ribless.
- Bearing no ribs, as a vertebra.
e- + costate (Wiktionary)