American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Having a yolk that is concentrated at one end: a telolecithal egg.
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).
- telo- + Greek lekithos, egg yolk + -al1. (American Heritage® Dictionary of the English Language, Fourth Edition)
“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.”
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