Holophane
[hol-uh-feyn, hoh-luh-]
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Trademark.
a brand of glass having a surface pattern of small, lenslike areas for even diffusion of light.
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for holophane
Historical Examples of holophane
This may be made of ground glass, opal glass, or be a dioptric globe such as the holophane.