(from the article `annelid`) ...four cells (blastomeres) give rise, by alternating clockwise and counterclockwise divisions, to a cap of smaller cells, called micromeres, at one ...
A blastomere of large size, as in amphibians. ... Origin: macro-+ G. Meros, part ... (05 Mar 2000) ... 
(mak´ro-mēr″) one of the large blastomeres formed by unequal cleavage of a zygote as the result of asymmetric positioning of the mitotic spindle; see also micromere.
Type: Term Pronunciation: mak′rō-mēr Definitions: 1. A blastomere of large size, as in amphibians.