n. [ Gr. 'o`ros mountain + -graph. ] (Surveying) A machine for use in making topographical maps. It is operated by being pushed across country, and not only records distances, like the perambulator, but also elevations. [ Webster 1913 Suppl. ]
n. [ Gr. 'o`ros, a mountain + -graphy. ] That branch of science which treats of mountains and mountain systems; orology; as, the orography of Western Europe. [ 1913 Webster ]
n. [ Gr. 'o`ros mountain + helio- + -graph. ] (Photog.) A camera for obtaining a circular panoramic view of the horizon. The photographic plate is placed horizontally with a vertical lens above. A mirror of peculiar shape reflects light from the entire horizon to the lens, by means of which it is focused upon the plate. [ Webster 1913 Suppl. ]
‖n. [ NL., fr. Gr. 'o`ros, mountain (referring to the Rocky Mountain region) + "i`ppos horse.] (Paleon.) A genus of American Eocene mammals allied to the horse, but having four toes in front and three behind. [1913 Webster]
n. [ F. or gold (L. aurum) + Gr. e'i^dos form. ] An alloy, chiefly of copper and zinc or tin, resembling gold in color and brilliancy. [ Written also oreide. ] [ 1913 Webster ]
n. [ Gr. 'o`ros mountain + -meter. ] (Meteor.) An aneroid barometer having a second scale that gives the approximate elevation above sea level of the place where the observation is made. [ Webster 1913 Suppl. ]