Bible Dictionaries
Silurian

Webster's Dictionary

(1):

(n.) The Silurian age.

(2):

(a.) Of or pertaining to the country of the ancient Silures; - a term applied to the earliest of the Paleozoic eras, and also to the strata of the era, because most plainly developed in that country.

Bibliography Information
Webster, Noah. Entry for 'Silurian'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​s/silurian.html. 1828.