(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.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). vermiculite. Retrieved September 27, 2026, from http://smartdefine.org/vermiculite/definitions/2079266 |
| Chicago | Webster's. 2011. "vermiculite" http://smartdefine.org/vermiculite/definitions/2079266 (accessed September 27, 2026). |
| Harvard | Webster's 2011, vermiculite, Smart Define, viewed 27 September, 2026, <http://smartdefine.org/vermiculite/definitions/2079266>. |
| MLA | Webster's. "vermiculite" 28 May 2011. Web. 27 September 2026. <http://smartdefine.org/vermiculite/definitions/2079266> |