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[loo-ver] /ˈlu vər/
any of a series of narrow openings framed at their longer edges with slanting, overlapping fins or slats, adjustable for admitting light and air while shutting out rain.
a fin or slat framing such an opening.
a ventilating turret or lantern, as on the roof of a medieval building.
any of a system of slits formed in the hood of an automobile, the door of a metal locker, etc., used especially for ventilation.
a door, window, or the like, having adjustable louvers.
verb (used with object)
to make a louver in; add louvers to:
to louver a door.
Origin of louver
1325-75; Middle English lover < Middle French lovier < Middle Dutch love gallery. See lobby
Related forms
louvered, adjective
Can be confused
louver, Louvre, lover. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for louvered
  • The teacher having granted permission, they enter a generous high-ceilinged room with louvered windows and hardwood floors.
  • louvered windows, open-air shower, verandas with rope hammocks for two.
  • Each cottage is complete with mosquito netting, louvered windows, and ceiling fans.
  • So have the half-open window shades and gray-and-blue louvered shutters.
  • Window awnings, louvered patio covers, or lattice-type panels can be considered as alternatives for existing homes.
  • One way to eliminate this problem is to make the overhang louvered to permit rising heat to escape.
  • louvered metal panels also occur on the east façade to admit fresh air independently from the windows.
  • louvered vents are located immediately below the windows and also at the first floor.
  • The low-pitched roof featured a vertical louvered vent filling the gable end.
  • In the center of the pediment is a semi-elliptical louvered vent.
British Dictionary definitions for louvered


(of a window, door, etc) having louvres
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
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Word Origin and History for louvered



also louvre, early 14c., "domed turret-like structure atop a building to disperse smoke and admit light," from Old French lovier, of uncertain origin. One theory connects it to Medieval Latin *lodarium, which might be from a Germanic source (cf. Old High German louba "upper room, roof;" see lobby). Another suggests it is from French l'ouvert, literally "the open place," from le, definite article, + past participle of ouvrir "to open." Meaning "overlapping strips in a window (to let in air but keep out rain)" first recorded 1550s. The form has been influenced by apparently unrelated French Louvre, the name of the palace in Paris, which is said to be so named because its builder, Philip Augustus, intended it as a wolf kennel. Related: Louvered.

Online Etymology Dictionary, © 2010 Douglas Harper
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