a device for superposing three specially prepared photographs of an object so as to produce an image in the natural colours.
| 单词 | θ233885 |
| 释义 | society > leisure > the arts > performance arts > optical shows > [noun] > heliochromoscope (1) heliochromoscope1892 a device for superposing three specially prepared photographs of an object so as to produce an image in the natural colours. |
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