What does clearstory mean?
A clearstory is the uppermost zone of wall in a church, hall, or other large building, rising above the rooflines of adjacent aisles or side wings and fitted with windows that let daylight and fresh air into the central interior space. It is an accepted variant spelling of the standard form "clerestory," both descending from the medieval English phrase 'clear storey' — literally the bright, well-lit level of the building. Clearstories are a defining feature of Gothic cathedrals, Romanesque basilicas, and many classical and modern structures, where they allow vast interiors to be lit naturally without weakening the walls at ground level. The term belongs chiefly to architectural and art-historical writing, and readers encountering it will most often see it in discussions of church design, historic buildings, or daylighting strategies in contemporary construction.
nounA clearstory is an alternative spelling of clerestory: a raised section of wall in a building, pierced by windows above adjoining roofs, that admits light and air into the central interior space.
- A row of high windows in the upper wall of a building, above adjacent rooflines, admitting light and air to the central space.
"Sunlight streamed through the cathedral's clearstory, illuminating the nave far below."
"The Romanesque abbey's clearstory allowed daylight to flood the otherwise dim nave."
"Modern warehouses often use a clearstory instead of artificial lighting to brighten the work floor."
Also spelled "clerestories" in the standard variant.
"The basilica's twin clearstories bathed the transept in afternoon light."
The word literally means 'clear storey' — the top floor of light in a cathedral — and it has been spelled both 'clear-' and 'clere-' since the Middle Ages.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of clearstory
The word derives from Middle English 'clear storey', meaning the well-lit upper storey of a building, and entered English during the medieval period alongside the great church-building campaigns. It shares its root with the adjective 'clear', ultimately from Latin 'clarus' ('bright, clear'), making it cognate with words such as clarity, clarify, and clairvoyant. Over time the spelling drifted between 'clearstory' and 'clerestory', with the latter now the standard form in most dictionaries.
How clearstory is actually used
Formal/architectural register, used mainly by architects, historians, and building professionals. The spelling "clerestory" is now standard in most dictionaries; "clearstory" survives as an accepted variant reflecting the word's literal origin as 'clear storey'.
Easily confused with clearstory
"Clerestory" is the standard modern spelling of the same architectural term; "clearstory" is an older or less common variant, so the two are identical in meaning rather than distinct in sense.