BLASTOSPHERE

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

blastosphere (plural blastospheres)

A blastula

Source: Wiktionary


Blas"to*sphere, n. Etym: [Gr. sprout + E. sphere.] (Biol.)

Definition: The hollow globe or sphere formed by the arrangement of the blastomeres on the periphery of an impregnated ovum.

Note: [See Illust. of Invagination.]

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

9 October 2024

VOLATILE

(noun) a volatile substance; a substance that changes readily from solid or liquid to a vapor; “it was heated to evaporate the volatiles”


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Coffee Trivia

Some 16th-century Italian clergymen tried to ban coffee because they believed it to be “satanic.” However, Pope Clement VII loved coffee so much that he lifted the ban and had coffee baptized in 1600.

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