VERMICULITE

vermiculite

(noun) any of a group of yellow or brown hydrous silicate minerals having a micaceous structure

Source: WordNet® 3.1

Etymology

Noun

vermiculite (countable and uncountable, plural vermiculites)

(mineral) A hydrated silicate mineral which expands on heating; it is used in insulation and as a medium for planting.

Source: Wiktionary

Ver*mic"u*lite, n. Etym: [L. vermiculus, dim. of vermis worm.] (Min.)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition

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