英和和英

語源

From international scientific vocabulary, from New Latin iridium, from Classical Latin iris +‎ -ium, from Ancient Greek ἶρις (îris, “rainbow”), because of the bright colour of many of the element's salts.

発音

• enPR: ĭrĭd'ēəm, IPA: /ɪˈɹɪd.i.əm/

名詞

iridium (countable and uncountable, plural iridiums)

1. (uncountable) A chemical element with an atomic number of 77: a very hard, brittle, silvery-white transition metal of the platinum group.

   Alternative form: Ir (symbol)

   • 2014, Elizabeth Kolbert, The Sixth Extinction: An Unnatural History, Picador, →ISBN, page 75:

     Iridium is extremely rare on the surface of the earth but much more common in meteorites.

2. (countable) A single atom of this element.

派生語

関連する語

語源

New Latin iridium is from Classical Latin iris, from Ancient Greek ἶρις (îris, “rainbow”), because of the bright colour of many of the element's salts.

発音

• (Classical Latin) IPA: [iːˈrɪ.di.ũː]
• (modern Italianate Ecclesiastical) IPA: [iˈriː.di.um]

名詞

īridium n (genitive īridiī); second declension

1. (New Latin) iridium

語形変化

Second-declension noun (neuter).