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[ aps ]
/ æps /

noun

Architecture. a semicircular or polygonal termination or recess in a building, usually vaulted and used especially at the end of a choir in a church.
Astronomy. an apsis.

Origin of apse

First recorded in 1815–25; variant of apsis

OTHER WORDS FROM apse

ap·si·dal [ap-si-dl] /ˈæp sɪ dl/, adjectiveap·si·dal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for apse

British Dictionary definitions for apse

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/ (æps) /

noun

Also called: apsis a domed or vaulted semicircular or polygonal recess, esp at the east end of a church
astronomy another name for apsis (def. 1)

Derived forms of apse

apsidal (æpˈsaɪdəl, ˈæpsɪdəl), adjective

Word Origin for apse

C19: from Latin apsis, from Greek: a fitting together, arch, from haptein to fasten
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012