from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Having a yolk that is concentrated at one end: a telolecithal egg.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. having the yolk at one end
from The Century Dictionary and Cyclopedia
- In embryology, having much food-yolk which is eccentric from the formative yolk, as the large meroblastic eggs of birds: correlated with alecithal (having no food-yolk) and centrolecithal (which see).
In these "telolecithal" ova, or ova with the yelk at one end (for instance, in the cyclostoma and amphibia), the gastrulation then usually takes place in such a way that in the cleavage of the impregnated ovum the animal (usually the upper) half splits up more quickly than the vegetal (lower).
An ovum such as this, in which the protoplasm is concentrated towards one pole, is called telolecithal.
Wordnik is becoming a not-for-profit! Read our announcement here.