英和和英

語源

From international scientific vocabulary, from the New Latin.

発音

• enPR: ĭrĭd'ēəm, IPA^(key): /ɪˈɹɪd.i.əm/

名詞

iridium (countable かつ uncountable, 複数形 iridiums)

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

Latin

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) IPA^(key): /iːˈri.di.um/, [iːˈrɪd̪iʊ̃ˑ]
• (Ecclesiastical) IPA^(key): /iˈri.di.um/, [iˈriːd̪ium]

名詞

īridium n (genitive īridiī); second declension

1. (New Latin) iridium

語形変化

Second-declension noun (neuter).