Definitions
from The Century Dictionary.
- Situated under the umbones of a bivalve shell.
from the GNU version of the Collaborative International Dictionary of English.
- adjective (Zoöl.) Beneath or forward of the umbos of a bivalve shell.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective zoology Beneath or forward of the
umbos of abivalve shell .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
sub- + umbonal
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Examples
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