retardantadj.n.

Brit.

/rᵻˈtɑːd(ə)nt/, U.S.

/rəˈtɑrdənt/,

/riˈtɑrdənt/

Origin: A borrowing from Latin. Etymons: Latin retardant-, retardāns, retardāre.

Etymology: < classical Latin retardant-, retardāns, present participle of retardāre retard v. Compare earlier retard v., retardance n., and later retarding adj., retardent adj., retardent n. With the use as noun compare also retarder n.

A. adj.

Retarding; tending to hinder or impede; reducing or inhibiting something. Frequently as the second element in objective compounds. Cf. retardent adj.fire-, flame-retardant: see the first element.

ΘΚΠ

the world > action or operation > difficulty > hindrance > types or manners of hindrance > [adjective] > hindering or retarding

back1628

retardant1642

retarding1654

tardative1666

retardive1787

retardatory1843

hold-back1852

the world > action or operation > difficulty > hindrance > types or manners of hindrance > [adjective] > hindering or retarding > specific fire, heat, etc.

retardent1881

retardant1900

1642 E. Dering Coll. Speeches on Relig. 1 If any thing I have said or done be..dissonant or retardant to a most severe Reformation.

1813 Lett. & Papers Agric. (Bath & West of Eng. Soc.) XIII. ii. xvii. 378 The bending of the instrument is in this case found correlatively retardant to the moving power.

1885 E. C. Stedman Poets of Amer. 468 We know the retardant effect of society upon artists of exalted sensibility.

1900 Official Gaz. (U.S. Patent Office) 352/1 Window-sashes, two of which are provided with wire-glass or other translucent fire-retardant material.

1947 Amer. Dyestuff Reporter 36 135/2 A flame-resistant or flame-retardant fabric is one which ‘exhibits appreciable resistance to afterflaming’.

1983 Globe & Mail (Toronto) (Nexis) 1 Dec. A change to the Environmental Protection Act in 1976 deemed that all cans be made of ‘steel’—actually steel coated with rust-retardant tin.

2002 D. Vince-Prue & T. Walker in D. Ingram et al. Sci. & Garden viii. 175/2 Growers are now trying to find alternatives to growth-retardant chemicals.

B. n.

Something (esp. a substance) that reduces, inhibits, or retards some phenomenon. Frequently as the second element in objective compounds. Cf. retardent n.fire-retardant: see the first element.

ΘΚΠ

the world > action or operation > difficulty > hindrance > types or manners of hindrance > [noun] > hindering or retarding > capacity to retard fire, etc. > substance which retards some phenomenon

retardant1824

retardent1858

1824 Encycl. Brit. Suppl. II. 154/2 To these four classes we might add four others of an exactly opposite nature, which might be called retardants, diminutives, and remissives of the pulse, and psyctics, or direct refrigerants.

1900 U.S. Patent 649,647 1,2 A perfect transparent fire-retardant suitable for fireproof windows.

1929 Sewage Wks. Jrnl. 1 197 Experimenting with chlorine gas as an odor retardant in sewage.

1959 New Scientist 8 Oct. 633/1 By the combined effects of day length control and a growth retardant, the growth habit of petunia plants can be modified.

1997 Business Rev. Weekly 25 Aug. 82/1 One of the main retardants to Internet broadcasting (or Webcasting, as it is more commonly called) is the present state of the communications networks.

2005 J. MacGregor Sunday Money xii. 312 Roberts was allergic to the flame retardant used in the firesuits, so he wore untreated, tailored coveralls.

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

单词	retardant
释义	retardantadj.n. Brit. /rᵻˈtɑːd(ə)nt/, U.S. /rəˈtɑrdənt/, /riˈtɑrdənt/ Origin: A borrowing from Latin. Etymons: Latin retardant-, retardāns, retardāre. Etymology: < classical Latin retardant-, retardāns, present participle of retardāre retard v. Compare earlier retard v., retardance n., and later retarding adj., retardent adj., retardent n. With the use as noun compare also retarder n. A. adj. Retarding; tending to hinder or impede; reducing or inhibiting something. Frequently as the second element in objective compounds. Cf. retardent adj.fire-, flame-retardant: see the first element. ΘΚΠ the world > action or operation > difficulty > hindrance > types or manners of hindrance > [adjective] > hindering or retarding back1628 retardant1642 retarding1654 tardative1666 retardive1787 retardatory1843 hold-back1852 the world > action or operation > difficulty > hindrance > types or manners of hindrance > [adjective] > hindering or retarding > specific fire, heat, etc. retardent1881 retardant1900 1642 E. Dering Coll. Speeches on Relig. 1 If any thing I have said or done be..dissonant or retardant to a most severe Reformation. 1813 Lett. & Papers Agric. (Bath & West of Eng. Soc.) XIII. ii. xvii. 378 The bending of the instrument is in this case found correlatively retardant to the moving power. 1885 E. C. Stedman Poets of Amer. 468 We know the retardant effect of society upon artists of exalted sensibility. 1900 Official Gaz. (U.S. Patent Office) 352/1 Window-sashes, two of which are provided with wire-glass or other translucent fire-retardant material. 1947 Amer. Dyestuff Reporter 36 135/2 A flame-resistant or flame-retardant fabric is one which ‘exhibits appreciable resistance to afterflaming’. 1983 Globe & Mail (Toronto) (Nexis) 1 Dec. A change to the Environmental Protection Act in 1976 deemed that all cans be made of ‘steel’—actually steel coated with rust-retardant tin. 2002 D. Vince-Prue & T. Walker in D. Ingram et al. Sci. & Garden viii. 175/2 Growers are now trying to find alternatives to growth-retardant chemicals. B. n. Something (esp. a substance) that reduces, inhibits, or retards some phenomenon. Frequently as the second element in objective compounds. Cf. retardent n.fire-retardant: see the first element. ΘΚΠ the world > action or operation > difficulty > hindrance > types or manners of hindrance > [noun] > hindering or retarding > capacity to retard fire, etc. > substance which retards some phenomenon retardant1824 retardent1858 1824 Encycl. Brit. Suppl. II. 154/2 To these four classes we might add four others of an exactly opposite nature, which might be called retardants, diminutives, and remissives of the pulse, and psyctics, or direct refrigerants. 1900 U.S. Patent 649,647 1,2 A perfect transparent fire-retardant suitable for fireproof windows. 1929 Sewage Wks. Jrnl. 1 197 Experimenting with chlorine gas as an odor retardant in sewage. 1959 New Scientist 8 Oct. 633/1 By the combined effects of day length control and a growth retardant, the growth habit of petunia plants can be modified. 1997 Business Rev. Weekly 25 Aug. 82/1 One of the main retardants to Internet broadcasting (or Webcasting, as it is more commonly called) is the present state of the communications networks. 2005 J. MacGregor Sunday Money xii. 312 Roberts was allergic to the flame retardant used in the firesuits, so he wore untreated, tailored coveralls. This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022). < adj.n.1642
随便看	θ48584 θ48585 θ48586 θ48587 θ48588 θ48589 θ4859 θ48590 θ48591 θ48592 θ48593 θ48594 θ48595 θ48596 θ48597 θ48598 θ48599 θ486 θ4860 θ48600 θ48601 θ48602 θ48603 θ48604 θ48605