An extensive series of strata, principally developed in the Rocky Mountain region, as in the Laramie Mountains, and formerly supposed to be of the Tertiary age, but now generally regarded as Cretaceous, or of intermediate and transitional character. It contains beds of lignite, often valuable for coal, and is hence also called the lignitic group. See Chart of Geology. →
n.
An envelope, or wrapping, of sheets used in hydropathic practice, called dry pack, wet pack, cold pack, etc., according to the method of treatment. →
n.
Specifically: That part of the United States lying north of Mason and Dixon's line. See under Line. →