Definitions of blastula [ˌli]

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Definition of 'blastula'

Random House Webster's College Dictionary

1. (n.) blastula
the early developmental stage of an animal, following the morula stage and consisting of a single spherical layer of cells enclosing a hollow, central cavity.

Etymology: (1885–90; < Gk blast(ós) bud, sprout + NL -ula -ule)

Definition of 'blastula'

Princeton's WordNet

1. (noun) blastula, blastosphere
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'

Webster Dictionary

1. (noun) blastula
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'

U.S. National Library of Medicine

1. blastula
An early non-mammalian embryo that follows the MORULA stage. A blastula resembles a hollow ball with the layer of cells surrounding a fluid-filled cavity (blastocele). The layer of cells is called BLASTODERM.

'blastula' - Nearby Entries
blast trauma blast wave blastosphere blastospheric blastula blastular blatancy

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