Main Entry: blas·to·mere

Pronunciation: \ˈblas-tə-ˌmi(ə)r\

Function: noun

: a cell produced during cleavage of a fertilized egg—called also cleavage cell

—blas·to·mer·ic \ˌblas-tə-ˈmi(ə)r-ik, -ˈmer-\ adjective