Definitions
from The Century Dictionary.
- In embryology, having the food-yolk (deutoplasm) central in position, surrounded by peripheral protoplasm.
- In embryology, noting that type of cleavage in which the dividing nuclei pass to the surface of the ovum, leaving the yolk in the center. This form of cleavage is characteristic of the Arthropoda, especially of the insects.
from the GNU version of the Collaborative International Dictionary of English.
- adjective (Biol.) Having the food yolk placed at the center of the ovum, segmentation being either regular or unequal.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective biology Having the
yolk placed in thecentre of thecytoplasm of theovum .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Ancient Greek
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Examples
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In the periblastic the food-yelk is in the centre, enclosed inside the ovum (hence they are also called "centrolecithal" ova): the formative yelk surrounds the food-yelk, and so suffers itself a superficial cleavage.
The Evolution of Man — Volume 1 Ernst Heinrich Philipp August Haeckel 1876
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