gastrula
(noun) double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm
Source: WordNet® 3.1
gastrula (plural gastrulas or gastrulae)
(embryology) A stage in the development of embryos of most animals consisting of a three-layered sac of ectoderm, mesoderm and endoderm.
• stragula
Source: Wiktionary
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
19 April 2025
(verb) grasp with the mind or develop an understanding of; “did you catch that allusion?”; “We caught something of his theory in the lecture”; “don’t catch your meaning”; “did you get it?”; “She didn’t get the joke”; “I just don’t get him”
The Boston Tea Party helped popularize coffee in America. The hefty tea tax imposed on the colonies in 1773 resulted in America switching from tea to coffee. In the lead up to the Revolutionary War, it became patriotic to sip java instead of tea. The Civil War made the drink more pervasive. Coffee helped energize tired troops, and drinking it became an expression of freedom.
