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plural supersigns
(semiotics) A higher-level sign. examples
(informal) A sign (panel bearing a message) that is highly technologically advanced or otherwise impressive. quotations examples
One of the three supersigns fabricated by County Neon Sign Corp. of Fairview, NY, the Virgin sign is composed of 6"-diameter stainless steel tubes set horizontally, with two bands of red neon running between each pair of tubes.
1996, Lighting Dimensions, volume 20, page 166