Share this entry

Share this page

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:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day reciprocity
Pronunciation: ˌrɛsɪˈprɒsɪti
noun
exchanging things with others for mutual benefit…