Definition of germ layer in English:

germ layer

Syllabification: germ lay·er

noun

Embryology
  • Each of the three layers of cells (ectoderm, mesoderm, and endoderm) that are formed in the early embryo.
    More example sentences
    • This process, called induction, culminates in the formation of a thickening in the ectoderm germ layer known as the neural plate.
    • The third germ layer, the endoderm, which is located at either end of the embryo, and which we do not consider here, gives rise to the mid-gut.
    • Muscle is one of the basic mesodermal tissues in bilaterians, and it is easy to see how this very efficient arrangement could lead to the formation of an entirely new germ layer.

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Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody