| 释义 |
platinoid, a. and n.|ˈplætɪnɔɪd|
[f. platin-um + -oid.]
A. adj. Resembling platinum.
1864in Webster. 1886in Cassell's Encycl. Dict.
B. n. [Cf. metalloid.]
1. Chem. Any metal of the class comprising platinum and those commonly found in association with it and resembling it in several properties, viz. iridium, osmium, palladium, rhodium, and ruthenium. Also called platinum metals.
1882in Ogilvie.
2. Name for an alloy of nickel, zinc, copper, and tungsten, of a silvery white colour, and resembling platinum in non-liability to tarnish, etc.
1885Engineering 3 July 17 Platinoid is practically German silver with from 1 to 2 per cent. of tungsten in it. 1892Pall Mall G. 21 Mar. 3/1 Very fine wires of ‘platinoid’, or some other convenient alloy. |