centrolecithal

Definitions

  • Webster's Revised Unabridged Dictionary
    • a centrolecithal (Biol) Having the food yolk placed at the center of the ovum, segmentation being either regular or unequal.
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Century Dictionary and Cyclopedia
    • centrolecithal In embryology, having the food-yolk (deutoplasm) central in position, surrounded by peripheral protoplasm.
    • centrolecithal 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.
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Etymology

Webster's Revised Unabridged Dictionary
Gr. ke`ntron center + le`kiqos yolk of an egg

Usage

In literature:

Centrolecithal: applied to eggs in which the food yolk is central.
"Explanation of Terms Used in Entomology" by John. B. Smith
Segmentation is usually of the superficial or centrolecithal type.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7" by Various
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