Origin: ModL: so named (1804) by S. Tennant (1761-1815), Eng chemist < Gr iris (gen. iridos), iris, because its salts have varied colors; + -ium
See iridium in American Heritage Dictionary 4
noun Symbol Ir
Origin: From Latin īris, īrid-, rainbow (from the colors produced by dissolving it in hydrochloric acid); see irido-
Origin: + -ium.
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