Definitions:

1. A naturally occurring solid form of ice, characterized by a regular geometric shape. NOUN
   • The scientist observed the ice crystals under a microscope, marveling at their intricate shapes.
2. A solid form of water that has a crystalline structure due to freezing, often forming various geometric shapes principally as a result of temperature and humidity variations. NOUN
   • Scientist study ice crystals to better understand weather patterns and cloud formation.
3. Piece of ice that forms when water vapor in the atmosphere condenses directly into solid ice without becoming liquid first, a process known as deposition. NOUN
   • The delicate ice crystal formed intricate patterns on the window.
4. Refers to a small, naturally occurring piece of ice, typically found in snowflakes, frost, and certain clouds. NOUN
   • Each snowflake is unique, but all snowflakes are made up of ice crystals with hexagonal structure.

Synonyms:

• diamond dust
• frost
• frost mist
• frost snow
• frozen water
• snow mist