rock bedn.

Brit.

/ˈrɒkbɛd/, U.S.

/ˈrɑkˌbɛd/

Origin: Formed within English, by compounding. Etymons: rock n.¹, bed n.

Etymology: < rock n.¹ + bed n.

1. A bed of rock; a rocky floor, bottom, or base; (in early use) spec. solid rock underlying loose deposits such as soil or alluvium; bedrock.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > [noun] > bedrock

shelf1671

stone-head1708

rock1719

rock bed1794

rock-bottom1797

rock-head1820

bed-rock1850

reef1869

1794 J. Beresford tr. Virgil Æneid ix. 353 The sound shakes tow'ring Prochyta, And shakes Inarime's rock-bed, o'erlaid At Jove's command on huge Typhœus' limbs.

1845 P. J. Bailey Festus (ed. 2) 218 Ocean's depths He clove unto their rock-bed.

1862 A. C. Ramsay et al. Descr. Catal. Rock Specim. (ed. 3) 126 In some localities in Oxfordshire..the ‘Rock bed’ of the Marlstone becomes highly ferruginous.

1865 G. W. Gesner A. Gesner's Pract. Treat. Coal (ed. 2) ii. 33 When the soil is not deep, a circular excavation is made down to the rock bed, and a hollow log, or ‘gum’, as it is called, is placed in it on one end.

1883 E. P. Ramsay Food Fishes New S. Wales 42 A hard rock-bed with large loose stones.

1952 E. J. Pratt Towards Last Spike 42 She took three engines, sank them..down through the hidden lake To the rock bed.

1991 Climber & Hill Walker (BNC) Nov. 32 We set off across bare rock beds from our base camp beneath the steep snow slopes of the Mera La.

1999 W. L. Heat Moon River Horse ii. 44 Gritty, swirling currents have cut into the rock bed of the Canajoharie Creek.

2. figurative. The fundamental principles on which something is based. Cf. bed-rock n.

ΘΚΠ

the world > existence and causation > causation > basis or foundation > [noun] > basis or fundamental principle

principlea1398

basec1500

principium1550

primordial1610

basisa1616

element1655

radical1656

principe1669

seminiuma1676

ultimate1710

rock beda1853

ultimatum1858

rock-bottom1866

ultimity1898

a1853 F. W. Robertson Serm. (1855) 1st Ser. ii. 27 Frivolity has turned the heart into a rockbed of selfishness.

1883 Home Missionary Sept. 201 The religious conceptions which are the rockbed ideas of Christianity.

1907 R. Muther Hist. Mod. Painting ii. xv. 387 History itself..clings merely to the rock-bed of old costume... The..greatest generation had finally come to handle it quite familiarly and humanly and without affected dignity.

1985 J. Walsh & P. G. Walsh Divine Providence & Human Suffering App. vi. 254 Christ has set in it the rock-bed of a perpetual good—the good of eternal salvation.

This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).

单词	rock bed
释义	rock bedn. Brit. /ˈrɒkbɛd/, U.S. /ˈrɑkˌbɛd/ Origin: Formed within English, by compounding. Etymons: rock n.¹, bed n. Etymology: < rock n.¹ + bed n. 1. A bed of rock; a rocky floor, bottom, or base; (in early use) spec. solid rock underlying loose deposits such as soil or alluvium; bedrock. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > [noun] > bedrock shelf1671 stone-head1708 rock1719 rock bed1794 rock-bottom1797 rock-head1820 bed-rock1850 reef1869 1794 J. Beresford tr. Virgil Æneid ix. 353 The sound shakes tow'ring Prochyta, And shakes Inarime's rock-bed, o'erlaid At Jove's command on huge Typhœus' limbs. 1845 P. J. Bailey Festus (ed. 2) 218 Ocean's depths He clove unto their rock-bed. 1862 A. C. Ramsay et al. Descr. Catal. Rock Specim. (ed. 3) 126 In some localities in Oxfordshire..the ‘Rock bed’ of the Marlstone becomes highly ferruginous. 1865 G. W. Gesner A. Gesner's Pract. Treat. Coal (ed. 2) ii. 33 When the soil is not deep, a circular excavation is made down to the rock bed, and a hollow log, or ‘gum’, as it is called, is placed in it on one end. 1883 E. P. Ramsay Food Fishes New S. Wales 42 A hard rock-bed with large loose stones. 1952 E. J. Pratt Towards Last Spike 42 She took three engines, sank them..down through the hidden lake To the rock bed. 1991 Climber & Hill Walker (BNC) Nov. 32 We set off across bare rock beds from our base camp beneath the steep snow slopes of the Mera La. 1999 W. L. Heat Moon River Horse ii. 44 Gritty, swirling currents have cut into the rock bed of the Canajoharie Creek. 2. figurative. The fundamental principles on which something is based. Cf. bed-rock n. ΘΚΠ the world > existence and causation > causation > basis or foundation > [noun] > basis or fundamental principle principlea1398 basec1500 principium1550 primordial1610 basisa1616 element1655 radical1656 principe1669 seminiuma1676 ultimate1710 rock beda1853 ultimatum1858 rock-bottom1866 ultimity1898 a1853 F. W. Robertson Serm. (1855) 1st Ser. ii. 27 Frivolity has turned the heart into a rockbed of selfishness. 1883 Home Missionary Sept. 201 The religious conceptions which are the rockbed ideas of Christianity. 1907 R. Muther Hist. Mod. Painting ii. xv. 387 History itself..clings merely to the rock-bed of old costume... The..greatest generation had finally come to handle it quite familiarly and humanly and without affected dignity. 1985 J. Walsh & P. G. Walsh Divine Providence & Human Suffering App. vi. 254 Christ has set in it the rock-bed of a perpetual good—the good of eternal salvation. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < n.1794
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