trilaminar blastoderm

tri·lam·i·nar blas·to·derm

the blastoderm after all three of the primary germ layers have been established.

trilaminar blastoderm

[trīlam′inər]
Etymology: Gk, treis + L, lamina, plate; Gk, blastos, germ, derma, skin
the stage of embryonic development in which all three of the primary germ layers, the ectoderm, mesoderm, and entoderm, have formed. Compare bilaminar blastoderm.