GASTRULAS

Noun

gastrulas

plural of gastrula

Source: Wiktionary


GASTRULA

Gas"tru*la, n.; pl. Gastrulæ Etym: [NL., dim. fr. Gr. (Biol.)

Definition: An embryonic form having its origin in the invagination or pushing in of the wall of the planula or blastula (the blastosphere) on one side, thus giving rise to a double-walled sac, with one opening or mouth (the blastopore) which leads into the cavity (the archenteron) lined by the inner wall (the hypoblast). See Illust. under Invagination. In a more general sense, an ideal stage in embryonic development. See Gastræa.

– a.

Definition: Of or pertaining to a gastrula.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

27 June 2025

SQUARE

(adjective) having four equal sides and four right angles or forming a right angle; “a square peg in a round hole”; “a square corner”


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