et

iriidium

1 substantive

EKI Combined Dictionary 2026

Last modified 12.02.2025

Meanings

hõbevalge väga vastupidav plaatinametall, keemiline element järjenumbriga 77
Synonyms
  • Ir symbol

Translations

Terminological databases

EKI terminibaas Esterm

ID 732134 Last modified 14.08.2015
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Domain inorganic chemistry
iriidium
Ir
iridium
Ir
  • keemiline element, plaatinametall, hõbevalge rabe ja väga kõva metall, sulamistemperatuur 2446 ºC, tihedus 22,65 Mg/m3
  • a silvery-white, hard, brittle, very heavy metallic element of the platinum group and group VIII that occurs usually as a native alloy with platinum or with osmium in iridosmine
iriidium
Ir symbol
iridium
Good to know
  • Iridium is chiefly used in the form of platinum alloys. Platinum-iridium alloys (5 to 10 percent iridium) are readily workable metals that are much harder and stiffer and more resistant to chemical attack than the soft pure platinum. Such alloys are used for jewelry, pen points, surgical pins and pivots, and electrical contacts and sparking points.
Ir symbol
iridium
Iridium
iridium

Word forms

Inflection Type 19

iriidium iriidiumid
iriidiumi iriidiumide
iriidiumi iriidiume

Inflection Type 2e

iriidium iriidiumid
iriidiumi iriidiumite
iriidiumit iriidiumeid

Etymology

laensõna
  • iriidium Ladina sõnast īris 'vikerkaar'
    • Iridium 'iriidium'
      • iridium 'iriidium' ( Smithson Tennant 1803 )

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