from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having a form of egg cleavage where only a small disc separates from the rest of the egg, associated with osseous fishes.
from the GNU version of the Collaborative International Dictionary of English
- adj. Applied to a form of egg cleavage seen in osseous fishes, which occurs only in a small disk that separates from the rest of the egg.
from The Century Dictionary and Cyclopedia
- Undergoing discoidal segmentation of the vitellus: applied to those meroblastic eggs which thereby produce a discogastrula in germinating.
Ancient Greek disk + to grow. (Wiktionary)