analemma

1 definition found

analemma - Collaborative International Dictionary of English v.0.48 :

  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