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meroblastic

American  
[mer-uh-blas-tik] / ˌmɛr əˈblæs tɪk /

adjective

Embryology.
  1. (of certain eggs) undergoing partial cleavage, resulting in unequal blastomeres.


meroblastic British  
/ ˌmɛrəʊˈblæstɪk /

adjective

  1. embryol of or showing cleavage of only the non-yolky part of the zygote, as in birds' eggs Compare holoblastic

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of meroblastic

First recorded in 1865–70; mero- + -blast + -ic

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Other species, such as birds, with a lot of yolk in the egg to nourish the embryo during development, undergo meroblastic cleavage.

From Textbooks • Jun. 9, 2022

This is comparatively easy in the small meroblastic ova which contain little nutritive yelk—for instance, in the marine ova of a bony fish, the development of which I observed in 1875 at Ajaccio in Corsica.

From The Evolution of Man — Volume 1 by Haeckel, Ernst Heinrich Philipp August

Such a type of segmentation in which only part of the ovum segments is called meroblastic.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)

Latebra, lat′eb-ra, n. the cavity in the food-yolk of a meroblastic ovum.—adj.

From Chambers's Twentieth Century Dictionary (part 2 of 4: E-M) by Various

Parablast, par′a-blast, n. the supplementary or nutritive yolk of a meroblastic egg or metovum—as distinguished from the archiblast, or formative yolk.—adj.

From Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) by Various

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