from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Nearly or approximately pentangular.
from the GNU version of the Collaborative International Dictionary of English
- adj. Nearly or approximately pentangular; almost pentangular.
from The Century Dictionary and Cyclopedia
- Irregularly or imperfectly pentagonal; having five sides of different lengths, or five rounded off angles.
sub- + pentagular (Wiktionary)