Contact nucleus

{
  "id": "MLC-T-MET-004629",
  "term": "Contact nucleus",
  "field": "Meteorology and atmospheric science",
  "definition": "A microscopic particle that initiates the freezing of supercooled water droplets upon direct contact. These nuclei are typically insoluble and possess a crystalline structure similar to ice, allowing them to act as templates for ice crystal formation. Silver iodide is a common substance used as a contact nucleus in cloud seeding operations.",
  "url": "https://mlchart.com/terminology/meteorology/contact-nucleus/"
}