pumice

{
  "id": "MLC-T-AGR-005309",
  "term": "pumice",
  "field": "Agriculture and food",
  "definition": "A volcanic glass full of cavities and very light in weight.",
  "subject": "Fields of Study",
  "see_also": [
    "volcanic rocks"
  ],
  "references": [
    "Burns, Russell M. and Barbara H. Honkala, tech. coords. Silvics of North America, vol 2. Hardwoods; Glossary. Agriculture handbook no. 654. U.S. Department of Agriculture, Forest Service, 1990",
    "NAL Agricultural Thesaurus and Glossary"
  ],
  "translations": {
    "es": "piedra pómez"
  },
  "url": "https://mlchart.com/terminology/agriculture/pumice/"
}