Analemma

‖n. [ L. analemma a sun dial on a pedestal, showing the latitude and meridian of a place, Gr. 'ana`lhmma a support, or thing supported, a sun dial, fr. 'analamba`nein to take up; 'ana` + lamba`nein to take. ] 1. (Chem.) An orthographic projection of the sphere on the plane of the meridian, the eye being supposed at an infinite distance, and in the east or west point of the horizon. [ 1913 Webster ]

2. An instrument of wood or brass, on which this projection of the sphere is made, having a movable horizon or cursor; -- formerly much used in solving some common astronomical problems. [ 1913 Webster ]

3. A scale of the sun's declination for each day of the year, drawn across the torrid zone on an artificial terrestrial globe. [ 1913 Webster ]