Mollisoln.

Brit.

/ˈmɒlᵻsɒl/, U.S.

/ˈmɑləˌsɔl/,

/ˈmɑləˌsɑl/

Forms: also with lower-case initial.

Origin: A borrowing from Latin, combined with an English element. Etymons: Latin mollis , -sol comb. form.

Etymology: < classical Latin mollis soft (see moll adj.) + -sol comb. form.With sense 1 compare pergelisol n.

1. Geomorphology. = active layer n. at active adj. and n. Compounds 2. rare.

ΚΠ

1946 K. Bryan in Amer. Jrnl. Sci. 244 636 Above the pergelisol lies a layer which thaws each summer and freezes each winter to a degree dependent on the march of temperature and the duration of the seasons... In thawing there is usually produced more water than the volume of pore space so that the layer becomes soft and tends to flow. It may, therefore, be termed the ‘mollisol’.

1972 B. W. Sparks & R. G. West Ice Age in Brit. iv. 99 Most people still speak of frost shattering rather than congelifraction, active layer rather than mollisol, permafrost rather than pergelisol.

2. Soil Science. Usually in form Mollisol. A soil of an order comprising temperate grassland soils with a dark, humus-rich surface layer containing high concentrations of calcium and magnesium ions.

ΚΠ

1960 Soil Classif.: 7th Approximation (U.S. Dept. Agric.) xii. 168/1 The Mollisols must have a mollic epipedon, but not all soils that have this epipedon are Mollisols.

1972 J. G. Cruickshank Soil Geogr. 141 Mollisols are grassland soils identified by their diagnostic surface horizon which is a deep, dark-coloured humic horizon.

1987 Jrnl. Soil Sci. Soc. Amer. 51 1647/2 This experiment has been conducted at three localities on four major Mollisols of Nebraska.

1996 Ecol. Applic. 6 1366/2 The soil is a relatively fertile loamy coarse sand and is classified as an entic Ultic Haploxeroll, order Mollisol in the Mottsville soil series.

This is a new entry (OED Third Edition, September 2002; most recently modified version published online March 2022).

单词	mollisol
释义	Mollisoln. Brit. /ˈmɒlᵻsɒl/, U.S. /ˈmɑləˌsɔl/, /ˈmɑləˌsɑl/ Forms: also with lower-case initial. Origin: A borrowing from Latin, combined with an English element. Etymons: Latin mollis , -sol comb. form. Etymology: < classical Latin mollis soft (see moll adj.) + -sol comb. form.With sense 1 compare pergelisol n. 1. Geomorphology. = active layer n. at active adj. and n. Compounds 2. rare. ΚΠ 1946 K. Bryan in Amer. Jrnl. Sci. 244 636 Above the pergelisol lies a layer which thaws each summer and freezes each winter to a degree dependent on the march of temperature and the duration of the seasons... In thawing there is usually produced more water than the volume of pore space so that the layer becomes soft and tends to flow. It may, therefore, be termed the ‘mollisol’. 1972 B. W. Sparks & R. G. West Ice Age in Brit. iv. 99 Most people still speak of frost shattering rather than congelifraction, active layer rather than mollisol, permafrost rather than pergelisol. 2. Soil Science. Usually in form Mollisol. A soil of an order comprising temperate grassland soils with a dark, humus-rich surface layer containing high concentrations of calcium and magnesium ions. ΚΠ 1960 Soil Classif.: 7th Approximation (U.S. Dept. Agric.) xii. 168/1 The Mollisols must have a mollic epipedon, but not all soils that have this epipedon are Mollisols. 1972 J. G. Cruickshank Soil Geogr. 141 Mollisols are grassland soils identified by their diagnostic surface horizon which is a deep, dark-coloured humic horizon. 1987 Jrnl. Soil Sci. Soc. Amer. 51 1647/2 This experiment has been conducted at three localities on four major Mollisols of Nebraska. 1996 Ecol. Applic. 6 1366/2 The soil is a relatively fertile loamy coarse sand and is classified as an entic Ultic Haploxeroll, order Mollisol in the Mottsville soil series. This is a new entry (OED Third Edition, September 2002; most recently modified version published online March 2022). < n.1946
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