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vermiculite

Line breaks: ver¦micu|lite
Pronunciation: /vəˈmɪkjʊlʌɪt
 
/

Definition of vermiculite in English:

noun

[mass noun]
A yellow or brown mineral found as an alteration product of mica and other minerals, used for insulation or as a moisture-retentive medium for growing plants.
Example sentences
  • Clay minerals are mainly illite and chlorite, with only traces of smectite, vermiculite and kaolinite.
  • The deposit was interpreted to have formed by the replacement of biotite by vermiculite under the influence of pegmatitic fluids.
  • These soil mixtures should include sand, peat moss, perlite, vermiculite, and fir bark for adequate drainage.

Origin

early 19th century: from Latin vermiculari 'be full of worms' (because on expansion due to heat, it shoots out forms resembling small worms) + -ite1.

Definition of vermiculite in:

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