understratumn.

Etymology: under- prefix¹ 2b(c).Previous versions of the OED give the stress as: ˈunderˌstratum.

An underlying stratum or layer; a substratum.

ΘΚΠ

the world > space > relative position > condition of being external > covering > a layer > [noun] > an underlying layer

substrature1726

substratum1730

understratum1731

litter1848

underlay1883

underlayer1896

substrate1918

1731 J. Tull New Horse-houghing Husbandry 114 These Drags draw them sometimes into larger Heaps, leaving the Under-Stratum bare betwixt them.

1783 Encycl. Brit. X. 8307/1 However great differences there may be among the under strata.

1808 C. Vancouver Gen. View Agric. Devon i. 19 The soil and understrata of Little Torrington.

1886 19th Cent. Sept. 421 There is a vast and virtuous understratum in society which really loves the right.

This entry has not yet been fully updated (first published 1921; most recently modified version published online June 2019).

单词	understratum
释义	understratumn. Etymology: under- prefix¹ 2b(c).Previous versions of the OED give the stress as: ˈunderˌstratum. An underlying stratum or layer; a substratum. ΘΚΠ the world > space > relative position > condition of being external > covering > a layer > [noun] > an underlying layer substrature1726 substratum1730 understratum1731 litter1848 underlay1883 underlayer1896 substrate1918 1731 J. Tull New Horse-houghing Husbandry 114 These Drags draw them sometimes into larger Heaps, leaving the Under-Stratum bare betwixt them. 1783 Encycl. Brit. X. 8307/1 However great differences there may be among the under strata. 1808 C. Vancouver Gen. View Agric. Devon i. 19 The soil and understrata of Little Torrington. 1886 19th Cent. Sept. 421 There is a vast and virtuous understratum in society which really loves the right. This entry has not yet been fully updated (first published 1921; most recently modified version published online June 2019). < n.1731
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