Vermiculite

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This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

The American Heritage® Dictionary of the English Language, 4th Edition
  • n. Any of a group of micaceous hydrated silicate minerals related to the chlorites and used in heat-expanded form as insulation and as a planting medium.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • n. A hydrated silicate mineral which expands on heating; it is used in insulation and as a medium for planting
  • the GNU version of the Collaborative International Dictionary of English
  • n. A group of minerals having, a micaceous structure. They are hydrous silicates, derived generally from the alteration of some kind of mica. So called because the scales, when heated, open out into wormlike forms.
  • The Century Dictionary and Cyclopedia
  • n. In mineralogy, one of a group of hydrous silicates having a micaceous structure, and in most cases derived from the common micas by alteration.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • n. any of a group of yellow or brown hydrous silicate minerals having a micaceous structure
  • Hypernym
    Words that are more generic or abstract
    mineral   
    Same Context
    Words that are found in similar contexts
    bentonite    rockwool    carbo    bef    unworked