vermiculite
(noun) any of a group of yellow or brown hydrous silicate minerals having a micaceous structure
Source: WordNet® 3.1
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
31 January 2025
(noun) the act of dispersing or diffusing something; “the dispersion of the troops”; “the diffusion of knowledge”
The first coffee-house in Mecca dates back to the 1510s. The beverage was in Turkey by the 1530s. It appeared in Europe circa 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses, and coffee had replaced beer as a breakfast drink.
