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
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Word of the Day
22 April 2025
BRIGHT
(adjective) made smooth and bright by or as if by rubbing; reflecting a sheen or glow; “bright silver candlesticks”; “a burnished brass knocker”; “she brushed her hair until it fell in lustrous auburn waves”; “rows of shining glasses”; “shiny black patents”
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