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APSIDAL

 - 3 dictionary results

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  [aps]
Use APSIDAL in a Sentence
–noun
1. Architecture. a semicircular or polygonal termination or recess in a building, usually vaulted and used esp. at the end of a choir in a church.
2. Astronomy. an apsis.
Origin:
1815–25; var. of apsis

Related forms:
ap⋅si⋅dal  [ap-si-dl] , adjective
ap⋅si⋅dal⋅ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To APSIDAL
ap·si·dal   (āp'sĭ-dəl)   
adj.  

  1. Of or relating to an apse.

  2. Of or relating to an apsis.

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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Word Origin & History

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1846, from L. apsis "arch, vault," from Gk. hapsis "loop, arch," from haptein "fasten together," the original sense in Gk. seems to have been the joining of the arcs to form a circle, especially in making a wheel. The architectural term is earlier attested in Eng. in the L. form (1706).
Online Etymology Dictionary, © 2001 Douglas Harper
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