GRAYWACKE

Noun

graywacke (countable and uncountable, plural graywackes)

Alternative form of greywacke

Source: Wiktionary


Gray"wacke`, n. Etym: [G. grauwacke; grau gray + wacke wacke. See Gray, and Wacke, and cf. Grauwacke.] (Geol.)

Definition: A conglomerate or grit rock, consisting of rounded pebbles sand firmly united together.

Note: This term, derved from the grauwacke of German miners, was formerly applied in geology to different grits and slates of the Silurian series; but it is now seldom used.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

4 June 2024

CONVULSIVE

(adjective) affected by involuntary jerky muscular contractions; resembling a spasm; ā€œconvulsive motionsā€; ā€œhis body made a spasmodic jerkā€; ā€œspastic movementsā€


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