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analemma

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an⋅a⋅lem⋅ma

[an-l-em-uh]
–noun, plural an⋅a⋅lem⋅mas, an⋅a⋅lem⋅ma⋅ta [an-l-em-uh-tuh] .
a scale shaped like the figure 8, showing the declination of the sun and the equation of time for each day of the year.

Origin:
1645–55; < L: pedestal of a sundial, sundial < Gk análēmma support


an⋅a⋅lem⋅mat⋅ic [an-l-e-mat-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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an·a·lem·ma   (ān'ə-lěm'ə)   
n.  A graduated scale in the shape of a figure eight, indicating the sun's declination and the equation of time for every day of the year and usually found on sundials and globes.

[Latin, sundial, from Greek analēmma, from analambanein, to take up; see analeptic.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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