通常指小型圓穹，外型類似倒杯或倒燈泡狀，設置於圓形、多邊形或方形基底上，或置於小柱子上，又或是四周鑲嵌玻璃的採光塔或天窗之上。圓頂多加蓋於塔樓、屋頂或大型圓穹上方。該詞彙亦可專指圓穹內部的拱頂。若該結構作為瞭望使用，則較常用「瞭望台」一詞。若為加裝窗戶結構的屋頂或圓穹，以使下層空間獲得良好採光或通風，則稱之為「採光塔（屋頂附屬物）」。至於具洋蔥外觀的圓穹，則不論其規模，均稱之為「洋蔥圓頂」。

圓屋頂(P,,U,繁體中文-偏好,D,,)
小圓頂(屋頂構造)　(,U,繁體中文-非偏好,UF,,)
圓頂屋頂(,U,繁體中文-非偏好,UF,U,U)
yüan wu ting (P,,U,韋氏拼音-偏好,UF,,)
yuán wū dǐng (P,,U,漢語拼音-偏好,UF,,)
yuan wu ding (P,,U,漢語拼音(無聲調)-偏好,UF,,)
cupolas(P,,U,英文-偏好,D,U,PN)
cupola(,U,英文-非偏好,AD,U,SN)
koepeltjes(P,,U,荷蘭語-偏好,D,U,U)
koepeltje(,U,荷蘭語-非偏好,AD,U,U)
coupoles(P,,U,法語-偏好,D,U,PN)
coupole(,U,法語-非偏好,AD,U,SN)
cupulinos(P,,U,西班牙語-偏好,D,U,PN)
cupulino(,U,西班牙語-非偏好,AD,U,SN)
cupulín(,U,西班牙語-非偏好,UF,U,SN)
domo(,U,西班牙語-非偏好,UF,U,SN)

藝術與建築詞典根目錄
....物件層面
........組件 (層級名)
............成分
................<依特定背景區分之組件>
....................建築元素
........................<結構元素與結構元素構造>
............................<結構元素>
................................<封閉式結構元素>
....................................<屋頂與屋頂構造>
........................................<屋頂構造>
............................................<外部屋頂構造>
................................................<屋頂附屬物>
....................................................圓屋頂

藝術與建築詞典根目錄
....物件層面
........組件 (層級名)
............成分
................<依特定背景區分之組件>
....................建築元素
........................<結構元素與結構元素構造>
............................<結構元素>
................................<封閉式結構元素>
....................................<圓頂與圓頂構造>
........................................圓頂 (建築元素)
............................................圓屋頂

meaning/usage overlaps with....	圓頂(建築元素)
distinguished from....	洋蔥圓頂
distinguished from....	採光塔(屋頂附屬物)
distinguished from....	瞭望台(屋頂附屬物)

英文....	Generally refers to small domes, often resembling overturned cups or bulbs, placed on a circular, polygonal, or square base or on small pillars or a glassed-in lantern or skylight. A cupola is typically used to crown a turret, roof, or larger dome. The term may also refer specifically to the inner vault of a dome. When these structures are intended to be used as lookouts, prefer "belvederes"; for windowed superstructures on roofs or domes used to admit light or air to the space below, use "lanterns (roof appendages)." To refer specifically to onion-shaped domes of any size, use "onion domes."
荷蘭語....	Wordt gebruikt voor kleine bouwwerken gebouwd op de nok ven een dak, vooral gebruikelijk in Amerikaanse architectuur. Wanneer deze bouwwerken bedoeld zijn als uitkijkpost wordt de benaming 'belvédères' gebruikt; voor koepels of bovenbouwen voorzien van ramen die bedoeld zijn om licht of lucht te geven aan de onderliggende ruimte wordt de benaming 'lantaarn (daktoevoegingen)'gebruikt; voor hemisferische daken wordt de benaming 'helmgewelf' gebruikt.

圓屋頂............	[AS-Academia Sinica]
.................	朗文當代大辭典 420
.................	國家教育研究院－雙語詞彙、學術名詞暨辭書資訊網 July 7, 2010
.................	朗文英漢雙解科技大辭典 406
小圓頂(屋頂構造)............	[AS-Academia Sinica]
.................	牛津當代大辭典 426
.................	世界藝術史 892
圓頂屋頂............	[AS-Academia Sinica]
.................	大英視覺藝術百科全書 Vol. 9, 177
cupolas............	[VP]
.................	Hubka, Big House, Little House (1984) GLOS
.................	Lever and Harris, Illustrated Glossary of Architecture (1966) illustration
.................	CDMARC Subjects: LCSH (1988-)
.................	Putnam and Carlson, Architectural and Building Trades Dictionary (1974)
.................	RILA, Subject Headings (1975-1990)
.................	Sturgis, Dictionary of Architecture and Building (1902)
.................	Worcester Art Museum Library, List of subject headings, unpub. (1976)
.................	Avery Index (1963-)
.................	Oxford English Dictionary Online (2002-) accessed 29 October 2007
.................	Nomenclature 3.0 for Museum Cataloging (2010)
.................	Encyclopedia Britannica Online (2002-) accessed 29 October 2007
cupola............	[VP]
.................	Dictionary of Architecture and Construction (1993) 234
.................	Fletcher, History of Architecture (1987) 1532
.................	Chenhall, Revised Nomenclature (1988)
.................	Oxford English Dictionary Online (2002-) accessed 29 October 2007
.................	Encyclopedia Britannica Online (2002-) accessed 29 October 2007
koepeltjes............	[Bureau AAT]
.................	AAT-Ned (1994-)
koepeltje............	[Bureau AAT]
.................	AAT-Ned (1994-)
coupoles............	[VP]
.................	CHIN database
coupole............	[VP]
.................	CHIN database
cupulinos............	[CDBP-DIBAM]
.................	Comité, Plural del término en singular
cupulino............	[CDBP-DIBAM]
.................	Ching, Diccionario Visual de Arquitectura (1997) 77
.................	Putnam y Carlson, Diccionario de Arquitectura, Construcción y Obras Públicas (1998)
cupulín............	[CDBP-DIBAM]
.................	Chambers, Diccionario científico y tecnológico (1979)
domo............	[CDBP-DIBAM]
.................	Robb, Diccionario para Ingenieros (1979)
Subject:............	[Bureau AAT]
.................	Bureau AAT, RKD

Getty AAT: 300002230 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300002230
聯合目錄： 圓屋頂 、小圓頂 、圓頂屋頂 、yüan wu ting 、yuán wū dǐng 、yuan wu ding 、cupolas 、cupola 、koepeltjes 、koepeltje 、coupoles 、coupole 、cupulinos 、cupulino 、cupulín 、domo