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A chandelier is a branched, decorative ceiling-mounted light fixture. Chandeliers are often ornate, using dozens of lamps and complex arrays of glass or crystal prisms to illuminate a room with refracted light.
The word chandelier appeared in the English language in the late 14th century, borrowed directly from 12th century Old Spanish. This was a new spelling of the 10th century French word chandelabre, which comes from the Latin candelabrum, itself from the Latin candela (meaning candle).
The earliest candle chandeliers were used by the wealthy in medieval times. They were generally wooden crosses, with spikes on which candles were secured. They were hoisted to a suitable height, hooked on a rope or chain.
From the 15th century, more complex forms of chandeliers, based on ring or crown designs, became popular decorative features in palaces and homes of nobility, clergy and merchants. Its high cost made the chandelier a symbol of luxury and status.
By the early 18th century, ornate cast ormolu forms with long, curved arms and many candles were in the homes of many in the growing merchant class. Neoclassical motifs became an increasingly common element, mostly in cast metals but also in carved and gilded wood. Developments in glassmaking later allowed cheaper production of lead crystal, the light scattering properties of which quickly made it a popular addition to the form, leading to the crystal chandelier.
In the mid-19th century, as gas lighting caught on, branched ceiling fixtures called gasoliers (a portmanteau of gas and chandelier) were produced, and many candle chandeliers were converted. By the 1890s, with the appearance of electric light, some chandeliers used both gas and electricity. As distribution of electricity widened, and supplies became dependable, electric-only chandeliers became standard.
The world's largest Bohemian crystal chandelier, a gift from Queen Victoria, is located in the Dolmabahçe Palace in Istanbul. It has 750 lamps and weighs 4.5 tons. Dolmabahçe has the largest collection of Bohemian and Baccarat crystal chandeliers in the world, and one of the great staircases has balusters of Baccarat crystal.
More complex and elaborate chandeliers continued to be developed throughout the 18th and 19th centuries, but the widespread introduction of gas and electricity had devalued the chandelier's appeal as a status symbol.
Toward the end of the 20th century, chandeliers were often used as a decorative focal points for rooms, and often did not illuminate.
The chandelier in the Dolmabahçe Palace is located in the Muayede Salonu (Ceremonial Hall)
Art Nouveau style chandelier, c. 1910, the Municipal House, Prague, Czech Republic
c. 1920 chandelier, Stockholm City Hall, Stockholm, Sweden
Electrified gaslight chandelier, ormolu, bronze, and glass, c. 1858, by Cornelius and Baker, Executive Chamber, the Vermont State House, Montpelier, Vermont
Three Chandeliers adorning the Tea Room in the Bath Assembly Rooms
The Octogon Room at the Bath Assembly Rooms with a central Chandelier
A Chandelier hanging at Chatsworth House
Glossary of terms 
Adam style A neoclassical style, light, airy and elegant chandelier - usually English.
Arm The light-bearing part of a chandelier also sometimes known as a branch.
Arm Plate The metal or wooden block placed on the stem, into which the arms slot.
Bag A bag of crystal drops formed by strings hanging from a circular frame and looped back into the center underneath, associated especially with early American crystal and regency style crystal chandeliers.
Baluster A turned wood or moulded stem forming the axis of a chandelier, with alternating narrow and bulbous parts of varying widths.
Bead A glass drop with a hole drilled right through.
Bobeche A dish fitted just below the candle nozzle, designed to catch drips of wax. Also known as a drip pan.
Branch Another name for the light-bearing part of a chandelier, also known as an arm.
Candelabra Not to be confused with chandeliers, candelabras are candlesticks, usually branched, designed to stand on tables, or if large, the floor.
Candlebeam A cross made from two wooden beams with one or more cups and prickets at each end for securing candles.
Candle nozzle The small cup into which the end of the candle is slotted
Canopy An inverted shallow dish at the top of a chandelier from which festoons of beads are often suspended, lending a flourish to the top of the fitting.
Cage An arrangement where the central stem supporting arms and decorations is replaced by a metal structure leaving the centre clear for candles and further embellishments.
Corona Another term for crown-style chandelier
Crown A circular chandelier reminiscent of a crown, usually of gilded metal or brass, and often with upstanding decorative elements.
Crystal Glass with a lead content that gives it special qualities of clarity, resonance and softness, making it especially suitable for cutting. Also known as lead crystal.
Drip Pan The dish fitted just below the candle nozzle, designed to catch drips of wax. Know also as a bobeche.
Drop A small piece of glass usually cut into one of many shapes and drilled at one end so that it can be hung from the chandelier with a brass pin. A chain drop is drilled at both ends so that a series can be hung together to form a necklace or festoon.
Dutch Also known as Flemish, a style of brass chandelier with a bulbous baluster and arms curving down around a low hung ball.
Festoon An arrangement of glass drops or beads draped and hung across or down a glass chandelier, or sometimes a piece of solid glass shaped into a swag. Also known as a garland.
Finial The final flourish at the very bottom of the stem. Some Venetian glass chandeliers have little finials hanging from glass rings on the arms.
Hoop A circular metal support for arms, usually on a regency-styles or other chandelier with glass pieces. Also known as a ring
Montgolfiere chandelier Chandelier with shape of "montgolfiere", the early French hot air balloon
Moulded The process by which a glass piece is shaped by being blown into a mould (rather than being cut)
Neoclassical Style Chandelier Glass chandelier featuring many delicate arms, spires and strings of beads.
Prism A straight, many sided drop
Regency Style Chandelier A larger chandelier with a multitude of drops. Above a hoop rise strings of beads that diminish in size and attach at the top to form a canopy. A bag, with concentric rings of pointed glass, forms a waterfall beneath. The stem is usually completely hidden.
Soda Glass A type of glass used typically in Venetian glass chandeliers. Soda glass remains “plastic” for longer when heated, and can therefore be shaped into elegant curving leaves and flowers.
Spire A tall spike of glass, round in section or flat sided. To which arms and decorative elements may be attached, made from wood, metal or glass.
Tent A tent shaped structure on the upper part of a glass chandelier where necklaces of drops attach at the top to a canopy and at the bottom to a larger ring.
Venetian A glass from the island of Murano, Venice but usually used to describe any chandelier in Venetian style.
Waterfall or Wedding Cake Concentric rings of icicle drops suspended beneath the hoop or plate.
See also 
|Wikimedia Commons has media related to: Chandeliers|
- Abbott James A., and Elaine M. Rice. Designing Camelot: The Kennedy White House Restoration. Van Nostrand Reinhold: 1998. ISBN 0-442-02532-7.
- Katz, Cheryl and Jeffrey. Chandeliers. Rockport Publishers: 2001. ISBN 978-1-56496-805-0.
- McCaffety, Kerri. The Chandelier Through the Centuries. Vissi d'Arte Books: 2007. ISBN 978-0-9709336-5-2.
- Parissien, Steven. Regency Style. Phaidon: 1992. ISBN 0-7148-3454-8.
- Glossary of terms. Lighting Styles http://www.lightingstyles.co.uk/ceiling/chandeliers/