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Analemma
(gcide) | Analemma \An`a*lem"ma\ (-l[e^]m"m[.a]), 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] analepsis |
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