First Known Use: 1824
Dictionary
vermiculite
noun ver·mic·u·lite \(ˌ)vər-ˈmi-kyə-ˌlīt\
Definition of VERMICULITE
: any of various micaceous minerals that are hydrous silicates resulting usually from expansion of the granules of mica at high temperatures to give a lightweight highly water-absorbent material
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Origin of VERMICULITE
Latin vermiculus little worm
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