platinoidadj.n.

Brit.

/ˈplatᵻnɔɪd/,

/ˈplatn̩ɔɪd/, U.S.

/ˈplætnˌɔɪd/

Origin: Formed within English, by derivation. Etymons: platinum n., -oid suffix.

Etymology: < platinum n. + -oid suffix. Compare French platinoïde , noun (1846 or earlier in sense B. 1; 1886 in sense B. 2 ( < English)).

A. adj.

1. Resembling platinum; belonging to the group of platinum metals. platinoid metal n. = platinum metal n. at platinum n. and adj. Compounds 2.

ΘΚΠ

society > occupation and work > materials > derived or manufactured material > metal > precious metal > [adjective] > resembling platinum

platinoid1853

1853 Sci. Amer. 11 June 307/3 The quantities of platinoid metals found in the California gold are small.

1929 Times 13 Sept. 18/6 Attention has been concentrated on research having for its object the extraction of the platinoid metals locally.

1960 R. Tyndale-Biscoe in W. V. Brelsford Handbk. Federation Rhodesia & Nyasaland xxiii. 420 Platinoid metals occur at certain horizons, but attempts to exploit them have been unsuccessful.

1984 Proc. Royal Soc. A. 395 35 In view of the very high partition coefficients for platinoid elements..a very small amount of residual sulphide–oxide eutectic liquid would suffice to extract virtually all of these elements from the silicate phase.

2. Made of the alloy called platinoid (sense B. 2). Now rare.

ΚΠ

1885 Philos. Trans. (Royal Soc.) 38 342 In the following table is shown the ratio of the resistances of a specimen of platinoid wire at different temperatures to its resistance at zero.

1919 Proc. Royal Soc. 1918–19 A. 95 377 With steel and platinoid wires the slightest scraping of the wire in any direction could be plainly heard in the amplifier telephones.

B. n.

1. Chemistry. A platinum metal. Usually in plural.

ΘΚΠ

society > occupation and work > materials > derived or manufactured material > metal > base metal > [noun] > metals of platinum group

platinum metal1842

platinoid1881

1881 Science 16 July 339/1 Metal free from mercury cannot be obtained by distillation and subsequent ignition, since a part of the mercury forms a stable compound with the platinoids.

1965 N. de Kun Min. Resources Afr. 427 In the upper 1–2 inches [of the Merensky Reef] the platinoids occur mainly as sulphides and sulpho-arsenides, sperrylite and cooperite.

1992 K. S. Robinson Red Mars (1993) vi. 382 They passed a new Amex mining station..perched on one of the rare big veins of mafic rock rich in platinoids.

2. A silvery-white alloy of nickel, zinc, copper, and tungsten, resembling platinum and having high electrical resistance. Now rare.

ΘΚΠ

society > occupation and work > materials > derived or manufactured material > metal > alloy > [noun] > other nickel alloys

speiss1796

nickel bronze1880

nickel steela1884

platinoid1885

cupro-nickel1905

Nichrome1908

Monel1909

Chromel1914

Alumel1918

Inconel1933

Nimonic1941

nitinol1968

1885 Proc. Royal Soc. 1884–5 38 340 On the electric resistance of a new alloy named platinoid... Read May 7, 1885... This alloy is the invention of Mr. F. W. Martino, of Sheffield.

1885 Engineering 3 July 17 Platinoid is practically German silver with from 1 to 2 per cent. of tungsten in it.

1892 Pall Mall Gaz. 21 Mar. 3/1 Very fine wires of ‘platinoid’, or some other convenient alloy.

1915 London, Edinb., & Dublin Philos. Mag. 6th Ser. 29 368 Of the following metals and alloys all..gave a positive emission..platinoid, eureka, tinned copper, and ‘galvanized’ iron.

1940 G. H. J. Adlam & L. S. Price Higher School Certificate Inorg. Chem. (ed. 2) lv. 580 It [sc. nickel] is a constituent of a large number of alloys; with copper and zinc it forms German silver and also platinoid.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	platinoid
释义	platinoidadj.n. Brit. /ˈplatᵻnɔɪd/, /ˈplatn̩ɔɪd/, U.S. /ˈplætnˌɔɪd/ Origin: Formed within English, by derivation. Etymons: platinum n., -oid suffix. Etymology: < platinum n. + -oid suffix. Compare French platinoïde , noun (1846 or earlier in sense B. 1; 1886 in sense B. 2 ( < English)). A. adj. 1. Resembling platinum; belonging to the group of platinum metals. platinoid metal n. = platinum metal n. at platinum n. and adj. Compounds 2. ΘΚΠ society > occupation and work > materials > derived or manufactured material > metal > precious metal > [adjective] > resembling platinum platinoid1853 1853 Sci. Amer. 11 June 307/3 The quantities of platinoid metals found in the California gold are small. 1929 Times 13 Sept. 18/6 Attention has been concentrated on research having for its object the extraction of the platinoid metals locally. 1960 R. Tyndale-Biscoe in W. V. Brelsford Handbk. Federation Rhodesia & Nyasaland xxiii. 420 Platinoid metals occur at certain horizons, but attempts to exploit them have been unsuccessful. 1984 Proc. Royal Soc. A. 395 35 In view of the very high partition coefficients for platinoid elements..a very small amount of residual sulphide–oxide eutectic liquid would suffice to extract virtually all of these elements from the silicate phase. 2. Made of the alloy called platinoid (sense B. 2). Now rare. ΚΠ 1885 Philos. Trans. (Royal Soc.) 38 342 In the following table is shown the ratio of the resistances of a specimen of platinoid wire at different temperatures to its resistance at zero. 1919 Proc. Royal Soc. 1918–19 A. 95 377 With steel and platinoid wires the slightest scraping of the wire in any direction could be plainly heard in the amplifier telephones. B. n. 1. Chemistry. A platinum metal. Usually in plural. ΘΚΠ society > occupation and work > materials > derived or manufactured material > metal > base metal > [noun] > metals of platinum group platinum metal1842 platinoid1881 1881 Science 16 July 339/1 Metal free from mercury cannot be obtained by distillation and subsequent ignition, since a part of the mercury forms a stable compound with the platinoids. 1965 N. de Kun Min. Resources Afr. 427 In the upper 1–2 inches [of the Merensky Reef] the platinoids occur mainly as sulphides and sulpho-arsenides, sperrylite and cooperite. 1992 K. S. Robinson Red Mars (1993) vi. 382 They passed a new Amex mining station..perched on one of the rare big veins of mafic rock rich in platinoids. 2. A silvery-white alloy of nickel, zinc, copper, and tungsten, resembling platinum and having high electrical resistance. Now rare. ΘΚΠ society > occupation and work > materials > derived or manufactured material > metal > alloy > [noun] > other nickel alloys speiss1796 nickel bronze1880 nickel steela1884 platinoid1885 cupro-nickel1905 Nichrome1908 Monel1909 Chromel1914 Alumel1918 Inconel1933 Nimonic1941 nitinol1968 1885 Proc. Royal Soc. 1884–5 38 340 On the electric resistance of a new alloy named platinoid... Read May 7, 1885... This alloy is the invention of Mr. F. W. Martino, of Sheffield. 1885 Engineering 3 July 17 Platinoid is practically German silver with from 1 to 2 per cent. of tungsten in it. 1892 Pall Mall Gaz. 21 Mar. 3/1 Very fine wires of ‘platinoid’, or some other convenient alloy. 1915 London, Edinb., & Dublin Philos. Mag. 6th Ser. 29 368 Of the following metals and alloys all..gave a positive emission..platinoid, eureka, tinned copper, and ‘galvanized’ iron. 1940 G. H. J. Adlam & L. S. Price Higher School Certificate Inorg. Chem. (ed. 2) lv. 580 It [sc. nickel] is a constituent of a large number of alloys; with copper and zinc it forms German silver and also platinoid. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < adj.n.1853
随便看	θ109814 θ109815 θ109816 θ109817 θ109818 θ109819 θ10982 θ109820 θ109821 θ109822 θ109823 θ109824 θ109825 θ109826 θ109827 θ109828 θ109829 θ10983 θ109830 θ109831 θ109832 θ109833 θ109834 θ109835 θ109836