BLASTULA
blastula, blastosphere
(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
Source: WordNet® 3.1
Etymology
Noun
blastula (plural blastulas or blastulae)
(embryology) An early form in the development of an embryo, consisting of a spherical layer of cells filled with fluid; a blastosphere.
Source: Wiktionary
Blas"tu*la, n. Etym: [NL., dim. of Gr. a sprout.] (Biol.)
Definition: That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm.
Source: Webster’s Unabridged Dictionary 1913 Edition
Word of the Day
13 January 2025
SOAK
(noun) the process of becoming softened and saturated as a consequence of being immersed in water (or other liquid); “a good soak put life back in the wagon”
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