| SUNBOW | An arc-en-ciel-like display of prismatic colours produced when natural rays shine through the mist or spray of a fountain or waterfall (6) |
| RAINBOW | An arc-en-ciel in the sky; any similar array of prismatic or spectral colours; or, an illusory hope (7) |
| SPECTRUM | The distribution of colours produced when white light is dispersed by a prism or diffraction grating (8) |
| SUNSTROKE | Overexposure to natural rays (9) |
| WAXY | Like displays in Madame Tussauds |
| HENNA | When natural dye is included (5) |
| SUNBEAM | Natural ray of light |
| FOGLAMPS | They cut through the mist where government department stays in luxury tent (3,5) |
| HAZE | Heard dry grasses through the mist (4) |
| FOGBOW | A sea dog or "arc-en-ciel blanc" produced as a result of sunlight shining through dense mist (3-3) |
| IRIS | A species of crystal, also called rainbow quartz; a messenger goddess whose sign was a rainbow; something prismatic, like said arc-en-ciel; or, a flower with purple or yellow petals known as falls, ru |
| MOONBOW | A rare nocturnal sublunary phenomenon characterised by an array or arc-en-ciel of spectral colours cast by "Selene" in the night sky (7) |
| BOWS | Toxophilites' weapons in the shape of goddess Iris's spectral arc-en-ciel; or, the knots reflected in farfalle (4) |
| SUNDOG | Explained in Minnaert's Light and Colour in the Open Air, a parhelic bright spot on the 22 degrees halo caused by diffraction by ice crystals in clouds, often showing prismatic colours (6) |
| RAINBOWS | Arches of coloured bands visible in the sky when sunlight shines through rain (8) |
| IRISCOPE | Instrument for exhibiting the prismatic colours (8) |
| SPECTRA | Arrays of colours produced by a prism (7) |
| ATRIA | Lobbies that let the light shine through |
| CHINK | Space for light to shine through when coins knock together (5) |
| ARC | ___- en- ciel (french rainbow) |
