Sī-lū’ri-an, a.
(89) (Synop., § 130), a. [From the Silures, who anciently inhabited a part of England and Wales.] (Geol.) Of, or pertaining to, the country of the ancient Silures:—a term applied to the earliest of the Paleozoic ages, and also to the strata of the age, because most plainly developed in that country. Dana.