subformationn.

Brit.

/ˈsʌbfɔːmeɪʃn/, U.S.

/ˈsəbfɔrˌmeɪʃ(ə)n/

Origin: Formed within English, by derivation. Etymons: sub- prefix, formation n.

Etymology: < sub- prefix + formation n.

A secondary or subsidiary formation; (Geology) a rock formation contained within a larger formation.

ΘΚΠ

the world > relative properties > number > mathematical number or quantity > numerical arrangement > [noun] > contained in another

subformation1816

submodule1930

subobject1950

1816 Brit. Rev. Feb. 95 The initial sounds or powers are..divided into nine series, as differing from each other by the character of simple sounds, aspirates, nasals, dentals, labials, or gutturals, or else of subformations or compounds of these.

1859 R. I. Murchison Siluria (new ed.) vi. 122 The whole of the calcareous courses of this subformation.

1920 T. O. Bosworth Geol. Mid Continent Oilfields 67 By means of the limestone bands, this System [sc. the Pennsylvanian] is divided up into a number of sub-formations or series.

1941 Battle of Brit. Aug.–Oct. 1940 (Min. of Information) 13 Weaving in and out between the sub-formations of the bombers.

1966 tr. H. Gericke Lattice Theory iv. 71 We shall show that the set of sub-formations of a formation..relative to a given axiom system..that satisfies a condition yet to be formulated forms a complete lattice.

2005 Palaeogeogr., Palaeoclimatol., Palaeoecol. 217 27/2 All three subformations contain plant fossils, but foliar remains are particularly abundant in the Middle Subformation.

This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).

单词	subformation
释义	subformationn. Brit. /ˈsʌbfɔːmeɪʃn/, U.S. /ˈsəbfɔrˌmeɪʃ(ə)n/ Origin: Formed within English, by derivation. Etymons: sub- prefix, formation n. Etymology: < sub- prefix + formation n. A secondary or subsidiary formation; (Geology) a rock formation contained within a larger formation. ΘΚΠ the world > relative properties > number > mathematical number or quantity > numerical arrangement > [noun] > contained in another subformation1816 submodule1930 subobject1950 1816 Brit. Rev. Feb. 95 The initial sounds or powers are..divided into nine series, as differing from each other by the character of simple sounds, aspirates, nasals, dentals, labials, or gutturals, or else of subformations or compounds of these. 1859 R. I. Murchison Siluria (new ed.) vi. 122 The whole of the calcareous courses of this subformation. 1920 T. O. Bosworth Geol. Mid Continent Oilfields 67 By means of the limestone bands, this System [sc. the Pennsylvanian] is divided up into a number of sub-formations or series. 1941 Battle of Brit. Aug.–Oct. 1940 (Min. of Information) 13 Weaving in and out between the sub-formations of the bombers. 1966 tr. H. Gericke Lattice Theory iv. 71 We shall show that the set of sub-formations of a formation..relative to a given axiom system..that satisfies a condition yet to be formulated forms a complete lattice. 2005 Palaeogeogr., Palaeoclimatol., Palaeoecol. 217 27/2 All three subformations contain plant fossils, but foliar remains are particularly abundant in the Middle Subformation. This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022). < n.1816
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