商用建築物或倉庫屋頂正下方的大型上層樓面空間，原先未經分隔，但也可能因另作他用而改裝。亦指鄰近天花板或屋頂，俯瞰下層起居空間的開放式居家睡眠空間或儲藏平台。位於房屋斜屋頂與最高樓層天花板間的密閉空間，則稱為「閣樓(內部空間)」。位在高樓層，佔房間全長或寬度的內部空間，則稱為「迴廊(上層空間)」。

頂樓(上層樓面)　(P,,U,繁體中文-偏好,D,U,U)
閣樓(,U,繁體中文-非偏好,UF,,)
ting lou(P,,U,韋氏拼音-偏好,UF,U,U)
dǐng lóu(P,,U,漢語拼音-偏好,UF,U,U)
ding lou(P,,U,漢語拼音(無聲調)-偏好,UF,U,U)
lofts(upper level floors)　(P,,U,英文-偏好,D,U,PN)
lofts(P,,U,荷蘭語-非偏好,D,U,U)
lofts(pisos nivel superior)　(P,,U,西班牙語-偏好,D,U,PN)
loft(,U,英文-非偏好,AD,U,SN)
loft(,U,荷蘭語-非偏好,AD,U,U)
loft(pisos nivel superior)　(,U,西班牙語-非偏好,AD,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>
....................<建築劃分>
........................<房間與空間>
............................<依地點位置和背景脈絡區分之房間與空間>
................................<內部空間>
....................................頂樓 (上層樓面)

meaning/usage overlaps with....	迴廊(上層空間)
distinguished from....	閣樓(內部空間)

英文....	Large upper-level floor spaces directly below the roof of commercial buildings or warehouses, originally unpartitioned but often modified for secondary use; may also be used for domestic sleeping or storage platforms set close to ceilings or roofs and open to and overlooking a living space below. For enclosed spaces under sloping roofs, between the roof and the ceiling of the uppermost story, especially in houses, use "attics (interior spaces)." For substantial interior spaces at the level of an upper story, usually extending the full length or width of rooms, use "galleries (upper level spaces)."
荷蘭語....	Dakverdiepingen van gebouwen, die als woning zijn ingericht. Gebruik 'penthouses' voor luxe appartementen op dakverdiepingen. Gebruik 'zolders' voor afgesloten ruimten onder schuine daken, tussen het dak en het plafond van de bovenste verdieping, vooral in huizen.

頂樓(上層樓面)............	[AS-Academia Sinica]
.................	朗文當代大辭典 1030
.................	中央研究院中英雙語知識本體詞網 November 13, 2012
閣樓............	[AS-Academia Sinica]
.................	朗文當代大辭典 1030
.................	中央研究院中英雙語知識本體詞網 November 13, 2012
.................	智慧藏百科全書網 November 13, 2012
.................	大英百科全書線上繁體中文版 November 13, 2012
lofts(upper level floors)............	[VP]
.................	Roberts, Construction Industry Thesaurus (1976) lofts
.................	CDMARC Subjects: LCSH (1988-) lofts
.................	Smit, Means Illustrated Construction Dictionary (1985) lofts
.................	Oxford English Dictionary (1989) lofts
.................	Putnam and Carlson, Architectural and Building Trades Dictionary (1974) lofts
.................	RCHME, Revised Thesaurus of Architectural Terms (1989) lofts
.................	RIBA, Architectural Keywords (1982) lofts
.................	Sturgis, Dictionary of Architecture and Building (1902) lofts
.................	Webster's Third New International Dictionary (1961) lofts
.................	Avery Index (1963-) lofts
.................	Random House Unabridged Dictionary (1993) lofts
.................	Getty Vocabulary Program rules
.................	Candidate term AVERY - 11/94; lofts
.................	AATA database (1995-) 125729 checked 26 January 2012
.................	AAT-Ned (1994-)
.................	Comité, Plural del término en singular
loft............	[VP]
.................	Getty Vocabulary Program rules
.................	Ching, Diccionario Visual de Arquitectura (1997) 95
.................	AAT-Ned (1994-)
Subject:............	[Bureau AAT]
.................	RIBA, Architectural Keywords (1982) artists' houses and studios; attics; warehouses
.................	AATA database (1995-) 125729 checked 26 January 2012
.................	Van Dale groot woordenboek (1994)

Getty AAT: 300255116 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300255116
聯合目錄： 頂樓 、閣樓 、ting lou 、dǐng lóu 、ding lou 、lofts 、loft 、lofts 、loft 、lofts 、loft