| mesectoderm | 1. Cells in the area around the dorsal lip of the blastopore where mesoderm and ectoderm undergo a process of separation. 2. That part of the mesenchyme derived from ectoderm, especially from the neural crest in the cephalic region in very young embryos. Synonym: ectomesenchyme. Origin: mes-+ ectoderm (05 Mar 2000) |
|---|