apsis

[ ap-sis ]

/ ˈæp sɪs /

noun, plural ap·si·des [ap-si-deez]. /ˈæp sɪˌdiz/.

Astronomy. either of two points in an eccentric orbit, one (higher apsis ) farthest from the center of attraction, the other (lower apsis ) nearest to the center of attraction.

Architecture. an apse.

Origin of apsis

1595–1605; <Latin <Greek hapsís (felloe of) a wheel, arch, vault, originally, fastening, equivalent to háp(tein) to fasten + -sis-sis

Words nearby apsis

A.P.S.A., Apsaras, apse, apsidal motion, apsidiole, apsis, Ap star, Apsu, Apsyrtus, apt, apteral

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for apsis

But the choir and apsis were previously of a different æra from the rest of the edifice.
Account of a Tour in Normandy, Vol. II. (of 2)|Dawson Turner
Then a man got up by the apsis and stood there half hidden by the stalactite rock.
The German Lieutenant and Other Stories|August Strindberg
The tomb is in the wall, behind a range of pillars, which form a kind of open screen round the apsis.
Account of a Tour in Normandy, Vol. I. (of 2)|Dawson Turner
It has two small transepts at the extremity of the nave, on each side of the apsis.
Beacon Lights of History, Volume V|John Lord

It does not span the apsis of a church; it spans rivers and valleys.
Beacon Lights of History, Volume V|John Lord

British Dictionary definitions for apsis

apsis

/ (ˈæpsɪs) /

noun plural apsides (æpˈsaɪdiːz, ˈæpsɪˌdiːz)

Also called: apse either of two points lying at the extremities of an eccentric orbit of a planet, satellite, etc, such as the aphelion and perihelion of a planet or the apogee and perigee of the moon. The line of apsides connects two such points and is the principal axis of the orbit

another name for apse (def. 1)

Derived forms of apsis

apsidal (æpˈsaɪdəl, ˈæpsɪdəl), adjective

Word Origin for apsis

C17: via Latin from Greek; see apse

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

Scientific definitions for apsis

apsis

[ ăp′sĭs ]

Plural apsides (ăp′sĭ-dēz′)

In the path of an orbiting body, either of the two points at which it is closest to or farthest away from the body it is orbiting. See also apoapsis periapsis.

单词	apsis
释义	apsis [ ap-sis ] / ˈæp sɪs / noun, plural ap·si·des [ap-si-deez]. /ˈæp sɪˌdiz/. Astronomy. either of two points in an eccentric orbit, one (higher apsis ) farthest from the center of attraction, the other (lower apsis ) nearest to the center of attraction. Architecture. an apse. Origin of apsis 1595–1605; <Latin <Greek hapsís (felloe of) a wheel, arch, vault, originally, fastening, equivalent to háp(tein) to fasten + -sis-sis Words nearby apsis A.P.S.A., Apsaras, apse, apsidal motion, apsidiole, apsis, Ap star, Apsu, Apsyrtus, apt, apteral Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for apsis But the choir and apsis were previously of a different æra from the rest of the edifice. Account of a Tour in Normandy, Vol. II. (of 2)\|Dawson Turner Then a man got up by the apsis and stood there half hidden by the stalactite rock. The German Lieutenant and Other Stories\|August Strindberg The tomb is in the wall, behind a range of pillars, which form a kind of open screen round the apsis. Account of a Tour in Normandy, Vol. I. (of 2)\|Dawson Turner It has two small transepts at the extremity of the nave, on each side of the apsis. Beacon Lights of History, Volume V\|John Lord It does not span the apsis of a church; it spans rivers and valleys. Beacon Lights of History, Volume V\|John Lord British Dictionary definitions for apsis apsis / (ˈæpsɪs) / noun plural apsides (æpˈsaɪdiːz, ˈæpsɪˌdiːz) Also called: apse either of two points lying at the extremities of an eccentric orbit of a planet, satellite, etc, such as the aphelion and perihelion of a planet or the apogee and perigee of the moon. The line of apsides connects two such points and is the principal axis of the orbit another name for apse (def. 1) Derived forms of apsis apsidal (æpˈsaɪdəl, ˈæpsɪdəl), adjective Word Origin for apsis C17: via Latin from Greek; see apse 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 Scientific definitions for apsis apsis [ ăp′sĭs ] Plural apsides (ăp′sĭ-dēz′) In the path of an orbiting body, either of the two points at which it is closest to or farthest away from the body it is orbiting. See also apoapsis periapsis. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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