precipitatorn.

Brit.

/prᵻˈsɪpᵻteɪtə/, U.S.

/priˈsɪpəˌteɪdər/,

/prəˈsɪpəˌteɪdər/

Forms: 1600s precipitater, 1600s– precipitator.

Origin: Formed within English, by derivation. Etymons: precipitate v., -or suffix.

Etymology: < precipitate v. + -or suffix. Compare post-classical Latin praecipitator person who throws down or destroys (early 5th cent. in Augustine), substance that causes precipitation (13th cent. in a British source) .

1. A person who or thing which brings about or hastens the occurrence of something; an initiator.

ΘΚΠ

the world > action or operation > manner of action > rapidity or speed of action or operation > [noun] > haste > action of causing > one who

hastener1576

precipitatora1660

a1660 H. Hammond Serm. (1664) v. 67 Zelots..as it prov'd, [were] the hastners and precipitators of the destruction [printed destrustion] of the Kingdom.

1710 D. Defoe Let. Mr. Bisset 8 Precipitations have always fixt the Interest they would Destroy, and been the Ruin of the Precipitators.

1855 N. Amer. Rev. Jan. 84 He should be looked upon rather as the precipitator of the Revolution.

1946 C. H. Gibbs-Smith Hist. Flying v. 74 The precipitators of ballooning were two brothers, papermakers of Annonay near Lyons.

2002 P. V. Dutton Origins French Welfare State iv. 135 Employers condemned social insurance as ruinous to the economy and a precipitator of moral decline.

a. Chiefly Chemistry. A substance or other agent that causes precipitation; a precipitant.In quot. 1897 figurative.

ΘΚΠ

the world > matter > chemistry > chemical reactions or processes > [noun] > chemical reactions or processes (named) > precipitation > precipitant

precipitator1681

precipitant1685

the world > matter > constitution of matter > density or solidity > state of being solid rather than fluid > [noun] > solid matter which falls to bottom of liquid > fact of depositing > that which causes

precipitator1681

1681 P. Bellon tr. F. de Monginot New Myst. Physick Introd. 20 I have found Antimony, Allum, and Coral, to be most powerful Dulcif[i]ers, Precipitaters, and Expulsers of divers sorts of Acides.

1717 Philos. Trans. (Royal Soc.) 30 566 The longer these Leaves, or any other Stipticks, (which are the Precipitators) do stay together, the more they degenerate into a deep Purple.

1778 W. Pryce Mineralogia Cornubiensis iii. 40 Sal Ammoniack..is chiefly used in making Aqua Regia, which its distilled volatile spirit serves to mortify, whence it becomes a precipitator of Gold.

1886 American 11 166 The slopes of elevations towards the sea are great precipitators of rain.

1897 N. Amer. Rev. 758 Time, the great precipitator of all turbidity, intervenes and prevents the hasty vote that would send the objectionable law to the White House for the President's action.

1995 European Jrnl. Pharmaceut. Sci. 3 232/1 Perchloric acid served the dual function as stabilizing agent for AA [= ascorbic acid]..and protein precipitator.

b. An apparatus for precipitation; spec. (a) chiefly Chemistry a vessel in which precipitation occurs (now rare); (b) chiefly Engineering an apparatus for removing particulate matter such as dust or smoke from a gas by passing it between electrodes, so that the particles acquire an electric charge and are attracted to an oppositely charged surface.

ΘΚΠ

the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > clarifying liquids > [noun] > apparatus for

precipitator1855

the world > matter > chemistry > equipment or apparatus > [noun] > miscellaneous apparatus

bain1477

speculum1650

filtering paper1651

wheel-fire1662

filter paper1670

sun furnace1763

respirator1789

candle-ball1794

rectifier1822

candle-bomb1823

filter1823

oxyhydrogen blowpipe1823

shade1837

graduator1839

pipette1839

thistle funnel1849

pressure tube1852

ozonizer1858

dialyser1861

Liebig condenser1861

Sprengel pump1866

Sprengel tube1866

water softener1867

mercury pump1869

Bunsen burner1870

dialysator1877

test-mixer1877

tube-condenser1877

Kipp1879

reflux condenser1880

policeman1888

converter1889

pressure boiler1891

spot plate1896

hydrogen electrode1898

sampler1902

reactor1903

fume-chamber1905

Permutit1910

microburner1911

salt bridge1915

precipitator1919

Raschig ring1920

microneedle1921

titrator1928

laboratory coatc1936

spray tower1937

precipitron1938

ion exchanger1941

potentiostat1942

chemostat1950

Knudsen pipette1951

pH-stat1956

cryopump1958

1855 De Bow's Rev. Feb. 184 The fire is then withdrawn, fifteen or twenty minutes is allowed for the heavier bodies floating in the liquor to precipitate, and the partially clarified liquor is carefully run off into the precipitator.

1883 R. Haldane Workshop Receipts 2nd Ser. 350/1 The mother-liquor is conducted through the pipe for mother-water to the precipitators.

1919 Jrnl. Amer. Chem. Soc. 41 587 (heading) An electrical precipitator for analyzing smokes.

1935 Times 4 Mar. 16/5 The instrument, a thermal precipitator, was..modified until it reached 100 per cent. efficiency for all particles likely to be of pathogenic importance.

1946 W. J. Ryan Water Treatm. & Purification (ed. 2) ii. 15 (caption) Precipitator or rapid up-flow coagulation tank.

1992 D. M. Muir Dust & Fume Control (rev. ed.) ii. 4 There is a wide choice of equipment used in dust control: cyclones and inertial separators,..electrostatic precipitators, fabric filters and deep bed filters.

This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022).

单词	precipitator
释义	precipitatorn. Brit. /prᵻˈsɪpᵻteɪtə/, U.S. /priˈsɪpəˌteɪdər/, /prəˈsɪpəˌteɪdər/ Forms: 1600s precipitater, 1600s– precipitator. Origin: Formed within English, by derivation. Etymons: precipitate v., -or suffix. Etymology: < precipitate v. + -or suffix. Compare post-classical Latin praecipitator person who throws down or destroys (early 5th cent. in Augustine), substance that causes precipitation (13th cent. in a British source) . 1. A person who or thing which brings about or hastens the occurrence of something; an initiator. ΘΚΠ the world > action or operation > manner of action > rapidity or speed of action or operation > [noun] > haste > action of causing > one who hastener1576 precipitatora1660 a1660 H. Hammond Serm. (1664) v. 67 Zelots..as it prov'd, [were] the hastners and precipitators of the destruction [printed destrustion] of the Kingdom. 1710 D. Defoe Let. Mr. Bisset 8 Precipitations have always fixt the Interest they would Destroy, and been the Ruin of the Precipitators. 1855 N. Amer. Rev. Jan. 84 He should be looked upon rather as the precipitator of the Revolution. 1946 C. H. Gibbs-Smith Hist. Flying v. 74 The precipitators of ballooning were two brothers, papermakers of Annonay near Lyons. 2002 P. V. Dutton Origins French Welfare State iv. 135 Employers condemned social insurance as ruinous to the economy and a precipitator of moral decline. 2. a. Chiefly Chemistry. A substance or other agent that causes precipitation; a precipitant.In quot. 1897 figurative. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > [noun] > chemical reactions or processes (named) > precipitation > precipitant precipitator1681 precipitant1685 the world > matter > constitution of matter > density or solidity > state of being solid rather than fluid > [noun] > solid matter which falls to bottom of liquid > fact of depositing > that which causes precipitator1681 1681 P. Bellon tr. F. de Monginot New Myst. Physick Introd. 20 I have found Antimony, Allum, and Coral, to be most powerful Dulcif[i]ers, Precipitaters, and Expulsers of divers sorts of Acides. 1717 Philos. Trans. (Royal Soc.) 30 566 The longer these Leaves, or any other Stipticks, (which are the Precipitators) do stay together, the more they degenerate into a deep Purple. 1778 W. Pryce Mineralogia Cornubiensis iii. 40 Sal Ammoniack..is chiefly used in making Aqua Regia, which its distilled volatile spirit serves to mortify, whence it becomes a precipitator of Gold. 1886 American 11 166 The slopes of elevations towards the sea are great precipitators of rain. 1897 N. Amer. Rev. 758 Time, the great precipitator of all turbidity, intervenes and prevents the hasty vote that would send the objectionable law to the White House for the President's action. 1995 European Jrnl. Pharmaceut. Sci. 3 232/1 Perchloric acid served the dual function as stabilizing agent for AA [= ascorbic acid]..and protein precipitator. b. An apparatus for precipitation; spec. (a) chiefly Chemistry a vessel in which precipitation occurs (now rare); (b) chiefly Engineering an apparatus for removing particulate matter such as dust or smoke from a gas by passing it between electrodes, so that the particles acquire an electric charge and are attracted to an oppositely charged surface. ΘΚΠ the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > clarifying liquids > [noun] > apparatus for precipitator1855 the world > matter > chemistry > equipment or apparatus > [noun] > miscellaneous apparatus bain1477 speculum1650 filtering paper1651 wheel-fire1662 filter paper1670 sun furnace1763 respirator1789 candle-ball1794 rectifier1822 candle-bomb1823 filter1823 oxyhydrogen blowpipe1823 shade1837 graduator1839 pipette1839 thistle funnel1849 pressure tube1852 ozonizer1858 dialyser1861 Liebig condenser1861 Sprengel pump1866 Sprengel tube1866 water softener1867 mercury pump1869 Bunsen burner1870 dialysator1877 test-mixer1877 tube-condenser1877 Kipp1879 reflux condenser1880 policeman1888 converter1889 pressure boiler1891 spot plate1896 hydrogen electrode1898 sampler1902 reactor1903 fume-chamber1905 Permutit1910 microburner1911 salt bridge1915 precipitator1919 Raschig ring1920 microneedle1921 titrator1928 laboratory coatc1936 spray tower1937 precipitron1938 ion exchanger1941 potentiostat1942 chemostat1950 Knudsen pipette1951 pH-stat1956 cryopump1958 1855 De Bow's Rev. Feb. 184 The fire is then withdrawn, fifteen or twenty minutes is allowed for the heavier bodies floating in the liquor to precipitate, and the partially clarified liquor is carefully run off into the precipitator. 1883 R. Haldane Workshop Receipts 2nd Ser. 350/1 The mother-liquor is conducted through the pipe for mother-water to the precipitators. 1919 Jrnl. Amer. Chem. Soc. 41 587 (heading) An electrical precipitator for analyzing smokes. 1935 Times 4 Mar. 16/5 The instrument, a thermal precipitator, was..modified until it reached 100 per cent. efficiency for all particles likely to be of pathogenic importance. 1946 W. J. Ryan Water Treatm. & Purification (ed. 2) ii. 15 (caption) Precipitator or rapid up-flow coagulation tank. 1992 D. M. Muir Dust & Fume Control (rev. ed.) ii. 4 There is a wide choice of equipment used in dust control: cyclones and inertial separators,..electrostatic precipitators, fabric filters and deep bed filters. This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022). < n.a1660
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