Hoar crystal

{
  "id": "MLC-T-MET-006260",
  "term": "Hoar crystal",
  "field": "Meteorology and atmospheric science",
  "definition": "An ice crystal that forms on surfaces when water vapor in the air sublimates directly onto a cold object, without first passing through a liquid phase. These delicate, feathery ice formations are common on cold, clear nights with high humidity and light winds. Hoar frost is a common example of hoar crystals forming on the ground or vegetation.",
  "url": "https://mlchart.com/terminology/meteorology/hoar-crystal/"
}