| SOLARHALO | Luminous circle of ice crystals |
| COTERIE | An exclusive circle of ice to reconstruct (7) |
| HALO | Luminous circle often depicting saintliness |
| VAPOURTRAILS | Streams of ice crystals in the wake of aircraft (6,6) |
| SNOW | A fall or blanket of ice crystals; a lemon- or vanilla-flavoured pudding resembling such; a winter; or, a whitefleshed variety of apple (4) |
| CIRRUS | Genus of wispy, high altitude clouds of ice crystals (6) |
| CIRRI | They're comprised of ice crystals |
| HOAR | Deposit of ice crystals |
| FROST | Deposit of ice crystals |
| CLOUDS | Visible masses of ice crystals and/or water droplets. |
| FRAZIL | Kind of ice crystals in water |
| SNOWFLAKE | Clump of ice crystals, small, at present with fellow on loch (9) |
| CIRROCUMULUS | A high cloud of ice crystals grouped into small separate globular masses (12) |
| RIME | The white, opaque, granular deposit of ice crystals formed on objects that are at a temperature below the freezing point. |
| SNOWFALL | Precipitation descending from clouds in the form of ice crystals (8) |
| VIRGA | From Latin for "branch, rod, twig", a term for an observable streak, wisp or "jellyfish cloud" of ice crystals, raindrops or snowflakes that evaporates before hitting Earth (5) |
| CORONA | Aureola of the sun or moon caused by diffraction by cloud droplets or ice crystals; the trumpet of a daffodil or other narcissus; or, a circular chandelier in a church (6) |
| CLOUD | Any visible mass of water droplets, ice crystals, or a mixture of both that is suspended in the air, usually at a considerable height. |
| SUNDOG | Depicted in a drawing by John Sell Cotman, a parhelion on the solar halo as a result of diffraction of light by ice crystals in the atmosphere (6) |
| ACTINIC | Effect of radiation found intact in ice crystals |
