Home › Words › M › micromeremicromeremicromere means an unusually small blastomere formed by unequal cleavage of a fertilized ovum.Among words judged in Lexicurio's Arena, micromere ranks #12,418 of 42,752 for Qualifying.EtymologyFrom micro- + -mere.nounAn unusually small blastomere formed by unequal cleavage of a fertilized ovum.Definitions & examples from Wiktionary (CC BY-SA 3.0).