vermiculiten.

Brit.

/vəːˈmɪkjᵿlʌɪt/,

/vəˈmɪkjᵿlʌɪt/, U.S.

/vərˈmɪkjəˌlaɪt/

Etymology: < Latin vermiculārī (see vermiculate v.) + -ite suffix¹.

1. Mineralogy.

a. ‘Hydrous silicate of aluminium, iron, and magnesium, occurring in small foliated scales’ (Chester).

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > vermiculite(s)

vermiculite1824

vermiculite1875

1824 T. H. Webb in Amer. Jrnl. Sci. 7 55 If subjected to the flame of a blowpipe,..it expands and shoots out into a variety of fanciful forms, resembling most generally small worms... If this proves to be a new variety..I term it Vermiculite (worm breeder).

1862 J. D. Dana Man. Mineral. 149 Vermiculite..looks and feels like steatite; but when heated before the blowpipe, worm-like projections shoot out, owing to a separation of the thin leaves composing the grains.

1888 F. Rutley Rock-forming Minerals 199 Vermiculite and Jeffreysite are considered to be altered varieties of phlogopite.

b. plural. (See quot. 1875.)

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > vermiculite(s)

vermiculite1824

vermiculite1875

1875 R. Hunt & F. W. Rudler Ure's Dict. Arts (ed. 7) III. 1074 Vermiculites, a group of minerals resembling the chlorites, remarkable for their exfoliation before the blowpipe.

c. Flakes of this mineral used as a moisture-holding medium for plant growth or as a protective covering for the storage of bulbs or tubers.

ΘΚΠ

the world > food and drink > farming > gardening > equipment and buildings > [noun] > artificial soil or compost

potting soil1861

potting compost1891

osmunda1910

osmundine1932

John Innes1939

vermiculite1950

perlite1956

Inceptisol1960

1950 Los Angeles Times Home Mag. 12 Feb. 38/3 Vermiculite is one of the finest storage materials for bulbs, tubers and corms as it insulates them from sudden temperature changes.

1981 Farmstead Mag. Winter 71/1 All that is necessary for this March project is a few water~proof trays, fiber or wooden slats, vermiculite for seed germination, and soilless mix such as ‘Promix’ for filling the flats.

1983 Which? Sept. 398/3 Wash off as much soil as possible, then stand the tubers, stem-down, in a dry, frost-free place..before..storing in boxes of dry peat or vermiculite.

Categories »

2. Geology. ‘A short worm-track seen on the surface of many flagstones’ (1884 Imperial Dict.).

This entry has not yet been fully updated (first published 1917; most recently modified version published online December 2021).

单词	vermiculite
释义	vermiculiten. Brit. /vəːˈmɪkjᵿlʌɪt/, /vəˈmɪkjᵿlʌɪt/, U.S. /vərˈmɪkjəˌlaɪt/ Etymology: < Latin vermiculārī (see vermiculate v.) + -ite suffix¹. 1. Mineralogy. a. ‘Hydrous silicate of aluminium, iron, and magnesium, occurring in small foliated scales’ (Chester). ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > vermiculite(s) vermiculite1824 vermiculite1875 1824 T. H. Webb in Amer. Jrnl. Sci. 7 55 If subjected to the flame of a blowpipe,..it expands and shoots out into a variety of fanciful forms, resembling most generally small worms... If this proves to be a new variety..I term it Vermiculite (worm breeder). 1862 J. D. Dana Man. Mineral. 149 Vermiculite..looks and feels like steatite; but when heated before the blowpipe, worm-like projections shoot out, owing to a separation of the thin leaves composing the grains. 1888 F. Rutley Rock-forming Minerals 199 Vermiculite and Jeffreysite are considered to be altered varieties of phlogopite. b. plural. (See quot. 1875.) ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > vermiculite(s) vermiculite1824 vermiculite1875 1875 R. Hunt & F. W. Rudler Ure's Dict. Arts (ed. 7) III. 1074 Vermiculites, a group of minerals resembling the chlorites, remarkable for their exfoliation before the blowpipe. c. Flakes of this mineral used as a moisture-holding medium for plant growth or as a protective covering for the storage of bulbs or tubers. ΘΚΠ the world > food and drink > farming > gardening > equipment and buildings > [noun] > artificial soil or compost potting soil1861 potting compost1891 osmunda1910 osmundine1932 John Innes1939 vermiculite1950 perlite1956 Inceptisol1960 1950 Los Angeles Times Home Mag. 12 Feb. 38/3 Vermiculite is one of the finest storage materials for bulbs, tubers and corms as it insulates them from sudden temperature changes. 1981 Farmstead Mag. Winter 71/1 All that is necessary for this March project is a few water~proof trays, fiber or wooden slats, vermiculite for seed germination, and soilless mix such as ‘Promix’ for filling the flats. 1983 Which? Sept. 398/3 Wash off as much soil as possible, then stand the tubers, stem-down, in a dry, frost-free place..before..storing in boxes of dry peat or vermiculite. Categories » 2. Geology. ‘A short worm-track seen on the surface of many flagstones’ (1884 Imperial Dict.). This entry has not yet been fully updated (first published 1917; most recently modified version published online December 2021). < n.1824
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