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G_______
Definitions
An early embryo stage with cells arranged into layers.
Word origin
From German Gastrula, coined by Ernst Haeckel in his 1872 work "Biology of Calcareous Sponges". From gastr- (from Ancient Greek γαστήρ (gastḗr, “stomach”) + Latin -ula.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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