Thunderhead

{
  "id": "MLC-T-MET-009647",
  "term": "Thunderhead",
  "field": "Meteorology and atmospheric science",
  "definition": "The upper, often anvil-shaped portion of a cumulonimbus cloud, indicative of a mature thunderstorm. This part of the cloud is composed primarily of ice crystals and spreads out horizontally when it reaches the stable air of the tropopause. The appearance of a thunderhead signals the presence of a strong updraft within the storm.",
  "url": "https://mlchart.com/terminology/meteorology/thunderhead/"
}