platino-comb. form
Chemistry.
Of or containing platinum, esp. in the divalent (platinous) state. Cf. platini- comb. form.
1.
platino-barium n. 
/ˌplatn̩ə(ʊ)ˈbɛːrɪəm/,
Brit. /ˌplatᵻnə(ʊ)ˈbɛːrɪəm/
, /ˌplatᵻnə(ʊ)ˈbɛːrɪəm//ˌplatn̩ə(ʊ)ˈbɛːrɪəm/U.S. /ˌplætn̩oʊˈbɛriəm/
/ˌplætn̩oʊˈbɛriəm/ΚΠ
1884 Chambers's Jrnl. 1 Mar. 141/1 The platino-barium cyanide, becomes highly luminous when inclosed in a tube and traversed by the electric current.
1901 Philos. Trans. (Royal Soc.) A. 196 35 In this way it was found, using a platino-barium cyanide screen, that [etc.].
2.
platinochloride n. /ˌplatn̩ə(ʊ)ˈklɔːrʌɪd/,
Brit. /ˌplatᵻnə(ʊ)ˈklɔːrʌɪd/
, /ˌplatᵻnə(ʊ)ˈklɔːrʌɪd//ˌplatn̩ə(ʊ)ˈklɔːrʌɪd/U.S. /ˌplætn̩oʊˈklɔˌraɪd/
a salt containing the anion [PtCl4]2−./ˌplætn̩oʊˈklɔˌraɪd/ΚΠ
1852 O. M. Lieber tr. F. Wöhler Analyt. Chemist's Assistant 46 The residue, being platino-chloride of potassium, is dried and weighed.
1873 H. Watts Fownes's Man. Elem. Chem. (ed. 11) 346 The acid tartrate and the platinochloride being..among the least soluble.
1938 R. Hum Chem. for Engin. Students xxviii. 798 Salts of the acid, such as potassium platinochloride..are made by reducing the corresponding chloroplatinates.
1950 N. V. Sidgwick Chem. Elements II. 1605 The chlorides (platinochlorides or platinites)..can be made by dissolving platinous chloride in a solution of an alkaline chloride.
platinocyanide n. /ˌplatn̩ə(ʊ)ˈsʌɪənʌɪd/,
Brit. /ˌplatᵻnə(ʊ)ˈsʌɪənʌɪd/
, /ˌplatᵻnə(ʊ)ˈsʌɪənʌɪd//ˌplatn̩ə(ʊ)ˈsʌɪənʌɪd/U.S. /ˌplætn̩oʊˈsaɪəˌnaɪd/
any of a series of fluorescent salts which contain the anion [Pt(CN)4]2−./ˌplætn̩oʊˈsaɪəˌnaɪd/ΘΚΠ
the world > matter > chemistry > organic chemistry > organic salts > [noun] > cyanides
sulphocyanide1841
platinocyanide1845
valeronitrile1847
rhodan1849
Everitt's salt1890
acrylonitrile1893
Zyklon B1939
TCNQ1960
propenenitrile1963
1845 W. Gregory Outl. Chem. ii. 306 The platino~cyanides of barium, strontium, and calcium..crystallise readily in beautiful greenish yellow colour.
1890 J. Cagney tr. R. von Jaksch Clin. Diagnosis vii. 211 For ferrocyanide of potassium platinocyanide of potassium may be substituted.
1926 Sunday at Home 677/2 The luminous paint..consists..of a mixture of some radium or thorium salt with some photo-sensitive substance like barium platinocyanide.
1989 C. Caufield Multiple Exposures (1990) i. 3 The screen was coated with barium platino-cyanide, a chemical compound that gives off light when its atoms are energized.
platino-iridium n. /ˌplatn̩əʊᵻˈrɪdɪəm/,
Brit. /ˌplatᵻnəʊᵻˈrɪdɪəm/
, /ˌplatᵻnəʊᵻˈrɪdɪəm//ˌplatn̩əʊᵻˈrɪdɪəm/U.S. /ˌplætn̩oʊɪˈrɪdiəm/
= platiniridium n./ˌplætn̩oʊɪˈrɪdiəm/ΚΠ
1875 Harper's Mag. Jan. 141/2 Some very curious phenomena have been observed by Tresca during the forging of the great ingot of platino-iridium.
1908 Practitioner Sept. 485 The best needle to use is one of platino-iridium, since it can be rendered absolutely sterile in the flame of a spirit lamp.
1962 Times 2 Jan. 7/3 Until now the standard metre was a bar of platino-iridium..which, it was believed, was equal in length to one ten-millionth of a meridianal quadrant of the earth.
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).
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comb. form1845