rapidityn.

Brit.

/rəˈpɪdᵻti/, U.S.

/rəˈpɪdᵻdi/,

/ræˈpɪdᵻdi/

Forms: 1600s rapiditie, 1600s– rapidity.

Origin: Of multiple origins. Partly a borrowing from French. Partly a borrowing from Latin. Etymons: French rapidité; Latin rapiditāt-, rapiditās.

Etymology: < Middle French, French rapidité speed of movement (1573), shortness of time elapsed (1575) and its etymon classical Latin rapiditāt-, rapiditās swiftness < rapidus rapid adj. + -tās (see -ty suffix¹; compare -ity suffix).

1. As a mass noun: the quality of being rapid; swiftness of movement, action, etc.; speed; velocity.

ΘΚΠ

the world > movement > rate of motion > swiftness > [noun]

swiftnessc888

speedOE

swiftship?c1225

swifthead1340

speedfulnessc1386

quickness?a1425

hastinessc1425

speediheadc1450

swiftinessa1464

radeur1477

celerity1483

speediness1530

swithnessc1540

velocity1555

raptness1582

pernicity1592

rapidity1601

fastness1604

fleetness1625

rida1642

rapidness1650

mercuriousnessa1661

1601 R. Dolman tr. P. de la Primaudaye French Acad. III. 90 By the rapiditie and violence of the continuall motion of the first moouer, all the spheres are carried away.

a1680 S. Butler Genuine Remains (1759) I. 16 The rapidity Of both their motions cannot be But so prodigiously fast.

1680 J. Davies tr. R. Rapin Instr. for Hist. xii. 46 He is principally recommendable upon the score of the swiftness and rapidity of his Discourse.

1701 J. Brand Brief Descr. Orkney, Zetland 48 The quickness and rapidity, of the Tide.

a1781 R. Watson Hist. Reign Philip III (1783) ii. 158 He advanced towards them with the utmost rapidity.

1807 T. Young Course Lect. Nat. Philos. I. xiii. 291 The pulse moves on with great rapidity, the elastic force of the vessels being considerably assisted by the temporary actions of the muscular coats of the arteries.

1871 J. Tyndall Fragm. Sci. (1879) I. xxi. 492 There are other actions which far transcend in rapidity that of the rifle-bullet.

1935 J. T. Winterich Early Amer. Printing ii. 47 Broadsides were emitted from his press almost with the zeal and rapidity of balls from flintlocks.

1959 D. Rhodes Stoneware & Porcelain x. 178 Brush strokes are best laid on with rapidity and sureness.

1997 Sight & Sound Sept. 14/2 Serial killing..is held to be facilitated by the anonymity of mass societies and the ease and rapidity of modern transport.

2. As a count noun: a rate, a speed. Now rare.In quot. 1701: a rapid flow of blood.

ΘΚΠ

the world > movement > rate of motion > [noun]

speedc1175

passa1393

pace?a1439

strake1558

rate1652

velocity1656

rapidity1701

rake1768

bat1824

clip1868

tempo1898

work rate1906

pacing1958

1701 tr. C. G. Le Clerc Descr. Bandages & Dressings 31 This Compress stops the Rapidities of the Blood.

1727 S. Hales Veg. Staticks 2 With what force and different rapidities those fluids are carried about in their proper channels.

a1774 O. Goldsmith Surv. Exper. Philos. (1776) I. 337 The water at the surface of a river, and that at its bottom, are often found to have very different rapidities.

1867 J. Tyndall Sound viii. 320 All the other figures produced by the combination of two tuning-forks may also be obtained from the vibrations of single rods, so formed that they shall oscillate with different rapidities in two rectangular directions.

1902 Amer. Jrnl. Psychol. 13 493 Different colors are perceived with different rapidities.

1930 J. H. Jeans Universe around Us (ed. 2) i. 59 If two Cepheids A, B in different parts of the sky are found to fluctuate with equal rapidities, then their intrinsic candle-powers must be equal.

This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022).

单词	rapidity
释义	rapidityn. Brit. /rəˈpɪdᵻti/, U.S. /rəˈpɪdᵻdi/, /ræˈpɪdᵻdi/ Forms: 1600s rapiditie, 1600s– rapidity. Origin: Of multiple origins. Partly a borrowing from French. Partly a borrowing from Latin. Etymons: French rapidité; Latin rapiditāt-, rapiditās. Etymology: < Middle French, French rapidité speed of movement (1573), shortness of time elapsed (1575) and its etymon classical Latin rapiditāt-, rapiditās swiftness < rapidus rapid adj. + -tās (see -ty suffix¹; compare -ity suffix). 1. As a mass noun: the quality of being rapid; swiftness of movement, action, etc.; speed; velocity. ΘΚΠ the world > movement > rate of motion > swiftness > [noun] swiftnessc888 speedOE swiftship?c1225 swifthead1340 speedfulnessc1386 quickness?a1425 hastinessc1425 speediheadc1450 swiftinessa1464 radeur1477 celerity1483 speediness1530 swithnessc1540 velocity1555 raptness1582 pernicity1592 rapidity1601 fastness1604 fleetness1625 rida1642 rapidness1650 mercuriousnessa1661 1601 R. Dolman tr. P. de la Primaudaye French Acad. III. 90 By the rapiditie and violence of the continuall motion of the first moouer, all the spheres are carried away. a1680 S. Butler Genuine Remains (1759) I. 16 The rapidity Of both their motions cannot be But so prodigiously fast. 1680 J. Davies tr. R. Rapin Instr. for Hist. xii. 46 He is principally recommendable upon the score of the swiftness and rapidity of his Discourse. 1701 J. Brand Brief Descr. Orkney, Zetland 48 The quickness and rapidity, of the Tide. a1781 R. Watson Hist. Reign Philip III (1783) ii. 158 He advanced towards them with the utmost rapidity. 1807 T. Young Course Lect. Nat. Philos. I. xiii. 291 The pulse moves on with great rapidity, the elastic force of the vessels being considerably assisted by the temporary actions of the muscular coats of the arteries. 1871 J. Tyndall Fragm. Sci. (1879) I. xxi. 492 There are other actions which far transcend in rapidity that of the rifle-bullet. 1935 J. T. Winterich Early Amer. Printing ii. 47 Broadsides were emitted from his press almost with the zeal and rapidity of balls from flintlocks. 1959 D. Rhodes Stoneware & Porcelain x. 178 Brush strokes are best laid on with rapidity and sureness. 1997 Sight & Sound Sept. 14/2 Serial killing..is held to be facilitated by the anonymity of mass societies and the ease and rapidity of modern transport. 2. As a count noun: a rate, a speed. Now rare.In quot. 1701: a rapid flow of blood. ΘΚΠ the world > movement > rate of motion > [noun] speedc1175 passa1393 pace?a1439 strake1558 rate1652 velocity1656 rapidity1701 rake1768 bat1824 clip1868 tempo1898 work rate1906 pacing1958 1701 tr. C. G. Le Clerc Descr. Bandages & Dressings 31 This Compress stops the Rapidities of the Blood. 1727 S. Hales Veg. Staticks 2 With what force and different rapidities those fluids are carried about in their proper channels. a1774 O. Goldsmith Surv. Exper. Philos. (1776) I. 337 The water at the surface of a river, and that at its bottom, are often found to have very different rapidities. 1867 J. Tyndall Sound viii. 320 All the other figures produced by the combination of two tuning-forks may also be obtained from the vibrations of single rods, so formed that they shall oscillate with different rapidities in two rectangular directions. 1902 Amer. Jrnl. Psychol. 13 493 Different colors are perceived with different rapidities. 1930 J. H. Jeans Universe around Us (ed. 2) i. 59 If two Cepheids A, B in different parts of the sky are found to fluctuate with equal rapidities, then their intrinsic candle-powers must be equal. This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022). < n.1601
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