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macromere

American  
[mak-ruh-meer] / ˈmæk rəˌmɪər /

noun

Embryology.

  1. one of the large blastomeres that form toward the vegetal pole in embryos undergoing unequal cleavage.

macromere British  
/ ˈmækrəʊˌmɪə /

noun

  1. embryol any of the large yolk-filled cells formed by unequal cleavage of a fertilized ovum

"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

Etymology

Origin of macromere

First recorded in 1875–80; macro- + -mere

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.