innergermlayer
nounUK /ˈɪnə ˈdʒɜːm ˌleɪə/
US /ˈɪnər ˈdʒɜrm ˌleɪər/
A thin layer of cells inside a tiny growing animal that later turns into its inside parts like the stomach.
The inner germ layer becomes the lining of the baby animal's gut.
RELATED WORDS
OTHER MEANINGS
2. The innermost of the three main cell layers in an early embryo.
Scientists studied the inner germ layer to see how organs form.
3. A layer that gives rise to the digestive tract and its glands.
The inner germ layer develops into the stomach and intestines.
4. The endoderm in a developing embryo.
In frogs, the inner germ layer forms early in development.