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单词 precipitant
释义

precipitantadj.adv.n.

Brit. /prᵻˈsɪpᵻt(ə)nt/, U.S. /priˈsɪpədənt/, /prəˈsɪpədənt/
Forms: 1600s–1700s praecipitant, 1600s– precipitant.
Origin: Of multiple origins. Partly a borrowing from French. Partly a borrowing from Latin. Etymons: French précipitant; Latin praecipitant-, praecipitans, praecipitāns.
Etymology: < French précipitant (adjective) acting with haste, rash (16th cent. in Middle French; earlier in sense ‘pressing’ (1492)), acting, occurring, or moving at great speed (1569) and its etymon post-classical Latin praecipitant-, praecipitans hasty (6th cent.), use as adjective of classical Latin praecipitant-, praecipitāns, present participle of praecipitāre precipitate v.The use as noun is not paralleled in French until later (a1759 in sense B. 1). With sense A. 3 compare earlier precipitantly adv., and compare also precipitate v.
A. adj. (and adv.)
1. Acting or inclined to act hurriedly and without deliberation; hasty, rash.
ΘΚΠ
the world > action or operation > manner of action > rapidity or speed of action or operation > [adjective] > acting with haste > foolishly or recklessly
hastivec1300
racklec1300
hastya1375
foolhastya1393
headya1425
properant1531
headlonga1533
steep1601
precipitate1607
precipitant1608
proclive1609
precipitious1612
precipitous1646
precipitating1681
ram-stam1786
precipit1922
1608 Bp. T. Morton Preamble Incounter 31 Thou hast beene rash and precipitant.
1665 S. Patrick Parable of Pilgrim ix. 40 They were..hurried by their blind and precipitant passion.
1741 S. Richardson Pamela IV. xxxvii. 222 She..is generous—noble—but has strong Passions, and is thoughtless and precipitant.
1762 H. Home Elem. Crit. (new ed.) I. ix. 304 A course too rapid impels to rash and precipitant action.
1803 tr. P. Le Brun M. Botte III. 67 The precipitant departure of his uncle,..his last expressions.
1896 in Westm. Gaz. 21 Oct. 10/2 He wants reform, but it must be gradual, not precipitant.
1940 O. J. Hale Publicity & Diplomacy v. 125 He had ‘strongly discouraged’ violent language and precipitant action.
1992 Times 14 Oct. 22/7 The company said it was writing to tell the bondholder that negotiations were well advanced and his action might be precipitant.
2. Acting, occurring, or moving at great speed; rapid, swift; sudden, abrupt.
ΘΚΠ
the world > movement > rate of motion > swiftness > swift movement in specific manner > [adjective] > moving with impetuous speed or headlong
ranka1250
whirling1382
hurlingc1400
whithering1513
headling?1518
vehement1528
heady1562
headlongc1565
precipitant1649
precipitate1654
torrent1667
precipitous1681
tearing1765
torrentuous1840
whirlwind1865
torrential1877
Gadarene1895
rocketing1952
the world > action or operation > manner of action > rapidity or speed of action or operation > [adjective] > acting with haste > hasty or sudden
subitane?a1425
subite?1483
subitany1603
precipitating1638
subitaneous1645
precipitous1646
precipitant1649
precipitate1658
precipitious1676
1649 Εἰκων Βασιλικη xii. 99 It was hard at first either to discerne the rise, or apply a remedy to that precipitant Rebellion.
1682 N. Grew Anat. Plants i. vii. 49 Lest its Current should be too copious or precipitant.
1725 E. Fenton in A. Pope et al. tr. Homer Odyssey I. i. 213 That troop so blithe and bold,..Precipitant in fear, wou'd wing their flight.
a1742 T. Story Jrnl. of Life (1747) 133 She was seized with..a strong Impulse to rise from her Seat, which she did in a precipitant manner.
1830 W. Phillips Mt. Sinai ii. 268 Walk'd he still erect,..quick-motion'd from the first, But not precipitant.
1910 P.MacKaye Garland to Sylvia iv. i. 149 What rush of streams precipitant Makes in my ears mill-noises?
1935 G. B. Eusterman et al. Stomach & Duodenum x. 241 So-called ‘dumping’ results with precipitant evacuation of gastric content.
2001 Life Insurance Internat. (Nexis) 28 Dec. 14 There is a clear and precipitant movement for a radical overhaul of the pay-as-you-go system.
3. Of a fall or descent: vertical, steep, directed straight down. Also as adv.: precipitantly, headlong. Now chiefly figurative.In quot. 1708: falling to the bottom as a precipitate or sediment.
ΘΚΠ
the world > movement > motion in a certain direction > downward motion > falling > [adjective] > falling steeply or swiftly
precipitate1614
precipitious1638
precipitant1667
toppling1812
plummeting1934
1667 J. Milton Paradise Lost iii. 563 He..without longer pause Down right into the Worlds first Region throws His flight precipitant . View more context for this quotation
1708 J. Philips Cyder ii. 68 Take care Thy muddy Bev'rage to serene, and drive Præcipitant the baser, ropy Lees.
1735 W. Somervile Chace iii. 335 He [sc. a horse]..plunging, from his Back the Rider hurls Precipitant.
1783 J. Logan Runnamede iv. 81 To plunge precipitant down to the deep Of hideous hell; the dungeon of the damn'd!
1877 P. J. Bailey Festus (ed. 10) ix. 134 Where Erie through Niagara hurls Precipitant all her thunderous waters down.
1964 Y. Bilinsky Second Soviet Republic 397 Despite the precipitant fall in the number of Jews in the Ukraine.
1998 Africa News (Nexis) 18 Dec. The emergent pattern of recent Eritrean history: a long struggle, a high triumph and now what looks like a self-propelled precipitant fall.
B. n.
1. Chemistry. A substance that causes precipitation of a particular solute when added to a solution. Usually with distinguishing word(s) or of.
ΘΚΠ
the world > matter > chemistry > chemical reactions or processes > [noun] > chemical reactions or processes (named) > precipitation > precipitant
precipitator1681
precipitant1685
1685 R. Boyle Short Mem. Hist. Mineral Waters 59 A copious Precipitate, such as might have been expected from an Alkaline Precipitant.
1756 C. Lucas Ess. Waters i. 112 The most complete precipitant of copper known, is iron.
1842 E. A. Parnell Elements Chem. Anal. (1845) 32 Hydrochloric acid and chloride of sodium, the ordinary precipitants of silver, also produce a precipitate with solutions of lead.
1933 S. W. Cole Pract. Physiol. Chem. (ed. 9) ix. 207 They [sc. enzymes] are also inhibited or destroyed by oxidising reagents, protein precipitants, HNO2, fluorides, etc.
1991 Industr. Waste Managem. Oct. 29/1 The programme consists of a heavy metal precipitant, and a coagulant or flocculant, depending on the nature of the wastewater.
2. A cause of a particular action or event, or a factor hastening its onset; (esp. in Psychology) a cause or stimulus which precipitates a particular condition. Chiefly with of, for.
ΚΠ
1905 Contemp. Rev. Oct. 503 Such impressions..seem to be little more than irritants or precipitants of consciousness.
1956 A. L. Rowse Early Churchills xii. 227 Marlborough was..an artist by temperament in his ups and downs—the depressions he got before the precipitant of action, the headaches that racked him [etc.].
1968 Brit. Jrnl. Psychiatry 114 720/2 In all cases the potency disorder had come on acutely, in response to a discrete physical or psychological precipitant.
1991 S. MacGregor Tackling Inner Cities (BNC) 57 This plausibly supports the view that it is relative deprivation which is causally related to crime, and that..this will act as a precipitant of crime.
1993 S. Milligan & A. Clare Depression & how to survive It (1994) iv. 99 Many people suffer depressive or manic mood swings without any clear precipitant or adverse social provocation.
This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022).
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adj.adv.n.1608
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