Webster defines a cyclorama as "a curved wall used as a background of a stage set to suggest unlimited space." ; To elaborate a bit further, a cyc is any type of walled background incorporating one or more curved surfaces that are used to create a background with no perceptible beginning or end.
www.procyc.com/whatisacyc.php
Note: The wall background is transparent, so any color or image that you have on the stage may be used as a background. ... Flat or curved wall; Displays flat or curved walls at any angle between; -360° (convex) and +360° (concave).
www.flashloaded.com/flashcomponents/3dwall/ www.flashloaded.com/flashcomponents/3dwall/
Note: The wall background is transparent, so any color or image that you have on the stage may be used as a background. ... Flat or curved wall; Displays flat or curved walls at any angle between; -360° (convex) and +360° (concave).
www.flashloaded.com/flashcomponents/3dverticalwall/ www.flashloaded.com/flashcomponents/3dverticalwall/
White Cyclorama is a curve wall used for stage background to create an illusion of unlimited space. These Hollywood studios have stages set ...
www.rottentomatoes.com/vine/showthread.php?p=16387343
a curved wall or drop at the back of a stage, used for creating an illusion of unlimited space or distance in the background of exterior scenes or for obtaining lighting effects.
dictionary.reference.com/browse/cyclorama
Building a curved wall with no "kinks" is rarely successful, but Jon's method turns the job into a no-brainer. ... Use the same plywood to make the butt block as used to make the wall. ... Many of the curved walls for John's hose were built off-site in his shop. When the house is at the proper stage of construction,
www.epoxyworks.com/13/curvewall.html www.epoxyworks.com/13/curvewall.html
Cyc is an abbreviated term for cyclorama.  Webster defines a cyclorama as "a curved wall used as a background of a stage set to suggest unlimited space." ...
www.printzone.com.sg/reso/blog/archives/2005/09/procyc_... www.printzone.com.sg/reso/blog/archives/2005/09/procyc_what_is.html
A fixture designed to provide an even wash of light on cycloramas (a curved curtain or wall used as a background of a stage set to suggest unlimited space) and backdrops. The cyc light can also be used as a multi-purpose flood or fill light for stage and studio lighting applications.
www.bhphotovideo.com/find/Product_Resources/lighting3.j... www.bhphotovideo.com/find/Product_Resources/lighting3.jsp
Once the new space was established, it took one year to come up with the funding to put in a lighting grid and a cyclorama (a curved curtain or wall used as a background of a stage set to give the impression of unlimited space).
gazette.gmu.edu/articles/11075/
cyclorama: a curved curtain or wall used as a background of a stage set to suggest unlimited space ... We are also shown the clever ways the props are used to make Truman think Seahaven is the best place to be. For example, in the travel agent's, there is a poster on the wall showing an aeroplane hit by lightning.
www.sammm.freeuk.com/termz.htm