名詞 iridium:

1. a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium
   同義詞：Ir, atomic number 77

i.rid.i.um

n.Symbol Ir （名詞）符號(hào) Ir
A very hard and brittle, exceptionally corrosion-resistant, whitish-yellow metallic element occurring in platinum ores and used principally to harden platinum and in high-temperature materials, electrical contacts, and wear-resistant bearings. Atomic number 77; atomic weight 92.2; melting point 2,40=C; boiling point 4,30=C; specific gravity 22.42 (at 7=C); valence 3, 4.See table at element
銥：一種堅(jiān)硬而脆的，極抗腐蝕的黃白色金屬，存在于鉑礦中，主要用來(lái)硬化鉑和制造耐高溫材料，電器接頭和耐磨軸承。原子序數(shù)77；原子重92.2；熔點(diǎn)2,40=C；沸點(diǎn)4,30=C；比重22.42（在7=C時(shí)）；化合價(jià)3，4參見(jiàn) element

來(lái)源：
Latin oris orid- [rainbow (from the colors produced by dissolving it in hydrochloric acid)] * see irido-
拉丁語(yǔ) oris orid- [彩虹（將銥溶解于鹽酸時(shí)會(huì)產(chǎn)生彩虹般的顏色）] *參見(jiàn) irido-
-ium
-ium