a federal park in N central Maryland: site of Camp David. 9 sq. mi. (23 sq. km).
a mountain range extending NE from NE Virginia through central Maryland: part of the Appalachian Mountains.
noun (electronics) the part of the electrolyte that surrounds the cathode in an electrolytic cell
a town in central Maryland, near Baltimore. Historical Examples
the branch of optics dealing with the formation of images by mirrors. Historical Examples noun (functioning as sing) the branch of optics concerned with reflection, esp the formation of images by mirrors adj. “pertaining to mirrors or a mirror,” 1774, from Latinized form of Greek katoptrikos, from katoptron “mirror,” from kata- “against” (see cata-) + […]