Vermiculite definition
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.
noun
Any of a number of very soft, monoclinic, hydrous silicate minerals resulting usually from alterations of mica and occurring in tiny, leafy scales that expand greatly when heated: used for insulation, water adsorption, etc.
noun
(mineralogy) A hydrated silicate mineral which expands on heating; it is used in insulation and as a medium for planting.
noun
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Other Word Forms
Noun
Singular:
vermiculite
Plural:
vermiculitesOrigin of vermiculite
- Latin vermiculus diminutive of vermis worm vermicular –ite
From American Heritage Dictionary of the English Language, 5th Edition
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From Wiktionary