First Known Use: 1804
Dictionary
iridium
noun irid·i·um \i-ˈri-dē-əm\
Definition of IRIDIUM
: a rare silver-white hard brittle very heavy metallic element — see element table
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Origin of IRIDIUM
New Latin, from Latin irid-, iris; from the colors produced by its dissolving in hydrochloric acid
IRIDIUM Defined for Kids
iridium
noun irid·i·um \i-ˈri-dē-əm\
Definition of IRIDIUM for Kids
: a hard brittle heavy metallic chemical element
Medical Dictionary
iridium
noun irid·i·um \ir-ˈid-ē-əm\
Medical Definition of IRIDIUM
: a silver-white hard brittle very heavy metallic element of the platinum group used especially in hardening platinum for alloys (as for surgical instruments)—symbol Ir; see element table
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