Also found in: Thesaurus, Encyclopedia, Wikipedia.
Related to vermiculite: Vermiculite Concrete


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.

[Latin vermiculus, diminutive of vermis, worm; see vermicular + -ite.]


(Minerals) any of a group of micaceous minerals consisting mainly of hydrated silicate of magnesium, aluminium, and iron: on heating they expand and exfoliate and in this form are used in heat and sound insulation, fireproofing, and as a bedding medium for young plants
[C19: from vermicul(ar) + -ite1]


(vərˈmɪk yəˌlaɪt)

any of a group of platy minerals, hydrous silicates of aluminum, magnesium, and iron, that expand markedly on being heated: used for insulation and as a plant growth medium.
[1815–25, Amer.; vermicul (ar) + -ite1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.vermiculite - any of a group of yellow or brown hydrous silicate minerals having a micaceous structure
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Mentioned in ?
References in periodicals archive ?
Tenders are invited for Vermiculite Based Fire Proofing Of Structural Steel Supports, Vessel, Equipment Etc As Per Tender.
Next month, the state will enact some important changes to the approved methods of testing for vermiculite which will continue to protect the public's health and safety and avoid costly testing.
Even a brief research will tell you that most of the vermiculite insulation put in attics between 1920 and 1990 came from a mine in Libby, Montana, that also had asbestos in it, and according to the EPA, "assume it has asbestos in it.
Vermiculite is most often a pedogenic clay mineral that can be formed by the transformation on weathering of illite or chlorite (Banfield and Murakami 1998; Bronger et al.
The best way to do a cutting is to snip off about 4 inches and strip off the lower leaves and then stick the stem into a soilless potting mix, like perlite or vermiculite.
Sow a quarter-inch deep in pots or trays of good, free-draining seed compost and cover with a sprinkling of vermiculite or compost.
CAROL: Snap a few of the scales cleanly from the mother bulbs and put in a polythene bag with dampened vermiculite.
Then I add 25% sand and a few handfuls of vermiculite to each bucketful.
For 70 years Vermiculite Mountain (also called Zonolite Mountain), located seven miles northeast of Libby, Montana, supplied over 70% of the world's vermiculite (U.
After exposure, the larvae were removed from the UP and transferred to plastic cups containing vermiculite with different proportions of neem seed cake (NSC) as follows: control (vermiculite only), 5% (5mL NSC plus 95mL vermiculite), 10% (10mL NSC plus 90mL vermiculite), 15% (15mL NSC plus 85mL vermiculite), 20% (20mL NSC plus 80mL vermiculite), 25% (25mL NSC plus 7mL vermiculite), and 30% (30mL NSC plus 70mL vermiculite).
Vermiculite is thought to have provided little or no nutrients to the soil during the experimental period.
VVL) sued both a competing vermiculite mining company, W.