noun🔗ShareBlástulaAn early form in the development of an embryo, consisting of a spherical layer of cells filled with fluid; a blastosphere."After fertilization, the egg divides repeatedly, forming a blastula, a hollow ball of cells that's an early stage in embryo development. "Después de la fertilización, el óvulo se divide repetidamente, formando una blástula, una bola hueca de células que es una etapa temprana en el desarrollo del embrión.biologyanatomyorganismanimalChat with AIVocabulary GamePractice Reading