micromere
/ˈmʌɪkrə(ʊ)mɪə/Embryology
noun
A relatively small blastomere formed by unequal segmentation in the fertilized ovum, such as one of those found at the animal pole of an amphibian ovum.
Origin
Late 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From micro- + -mere. Compare ancient Greek μικρομερής consisting of small parts. Compare also French micromère.