01 n. 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 w…
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1.
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.(Chem.)
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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.
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3.
A scale of the sun's declination for each day of the year, drawn across the torrid zone on an artificial terrestrial globe.