Lexic.us

Definition of Blastula

1. Noun. Early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs.

Definition of Blastula

1. n. That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm.

Definition of Blastula

1. an early embryo [n BLASTULAS or -LAE]

Medical Definition of Blastula

1. Stage of embryonic development of animals near the end of cleavage but before gastrulation. In animals where cleavage (cell division) involves the whole egg, the blastula usually consists of a hollow ball of cells. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Blastula

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