supercontinentn.

Brit.

/ˈsuːpəˌkɒntᵻnənt/,

/ˈsjuːpəˌkɒntᵻnənt/, U.S.

/ˈsupərˌkɑntn̩ənt/

Origin: Formed within English, by derivation. Etymons: super- prefix, continent n.

Etymology: < super- prefix + continent n.

Geology.

A postulated land mass containing all of the earth’s continental crust, or containing the cratons of a number of the present-day continents; = protocontinent n.Supercontinents which are thought to have existed at different geological times include: Gondwanaland n., Laurasia n., Pangaea n., Rodinia n.

ΘΚΠ

the world > the earth > land > land mass > continent > [noun]

continenta1613

supercontinent1923

protocontinent1952

1923 H. Shapley in Science 16 Mar. p. x The astronomical theory of the origin of the moon does not make it necessary to believe that at one time all the land on the surface of the parent earth was combined in a super-continent.

1953 Geogr. Rev. 43 279 Gondwanaland, a supercontinent assumed to have included all present lands of the Southern Hemisphere.

1963 Sci. Amer. Apr. 89/1 According to Wegener all the continents had been joined in a single supercontinent about 200 million years ago.

1991 S. Winchester Pacific (1992) 41 Some then inexplicable process forced the supercontinents to break into immense component parts.

2005 M. Bjornerud Reading Rocks iv. 137 A hundred million years is the approximate life span of an ocean basin or a supercontinent.

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

单词	supercontinent
释义	supercontinentn. Brit. /ˈsuːpəˌkɒntᵻnənt/, /ˈsjuːpəˌkɒntᵻnənt/, U.S. /ˈsupərˌkɑntn̩ənt/ Origin: Formed within English, by derivation. Etymons: super- prefix, continent n. Etymology: < super- prefix + continent n. Geology. A postulated land mass containing all of the earth’s continental crust, or containing the cratons of a number of the present-day continents; = protocontinent n.Supercontinents which are thought to have existed at different geological times include: Gondwanaland n., Laurasia n., Pangaea n., Rodinia n. ΘΚΠ the world > the earth > land > land mass > continent > [noun] continenta1613 supercontinent1923 protocontinent1952 1923 H. Shapley in Science 16 Mar. p. x The astronomical theory of the origin of the moon does not make it necessary to believe that at one time all the land on the surface of the parent earth was combined in a super-continent. 1953 Geogr. Rev. 43 279 Gondwanaland, a supercontinent assumed to have included all present lands of the Southern Hemisphere. 1963 Sci. Amer. Apr. 89/1 According to Wegener all the continents had been joined in a single supercontinent about 200 million years ago. 1991 S. Winchester Pacific (1992) 41 Some then inexplicable process forced the supercontinents to break into immense component parts. 2005 M. Bjornerud Reading Rocks iv. 137 A hundred million years is the approximate life span of an ocean basin or a supercontinent. This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022). < n.1923
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