Transcription
-
- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
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- [ih-rid-ee-uh m, ahy-rid-]
- /ɪˈrɪd i əm, aɪˈrɪd-/
- /ɪˈrɪd.i.əm/
-
- US Pronunciation
- US IPA
-
- [ih-rid-ee-uh m, ahy-rid-]
- /ɪˈrɪd i əm, aɪˈrɪd-/
Definitions of iridium word
- noun iridium a precious metallic element resembling platinum: used in platinum alloys and for the points of gold pens. Symbol: Ir; atomic weight: 192.2; atomic number: 77; specific gravity: 22.4 at 20°C. 1
- noun iridium The chemical element of atomic number 77, a hard, dense silvery-white metal. 1
- noun iridium chemical element 1
- noun iridium a very hard inert yellowish-white transition element that is the most corrosion-resistant metal known. It occurs in platinum ores and is used as an alloy with platinum. Symbol: Ir; atomic no: 77; atomic wt: 192.22; valency: 3 or 4; relative density: 22.42; melting pt: 2447°C; boiling pt: 4428°C 0
- noun iridium a white, extremely dense, brittle, corrosion-resistant chemical element, one of the platinum metals: alloys of iridium are used in electrodes, pen points, crucibles, etc.: symbol, Ir; at. no., 77 0
- noun iridium A metallic chemical element (symbol Ir) with an atomic number of 77. 0
Information block about the term
Origin of iridium
First appearance:
before 1804 One of the 42% newest English words
1804; < Latin īrid-, stem of īris rainbow (see iris) + -ium; so named from its iridescence when dissolved in hydrochloric acid
Historical Comparancy
Parts of speech for Iridium
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
iridium popularity
A common word. It’s meaning is known to most children of preschool age. About 73% of English native speakers know the meaning and use the word.
Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".
iridium usage trend in Literature
This diagram is provided by Google Ngram ViewerAntonyms for iridium
noun iridium
Top questions with iridium
- what is iridium?
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- how to make iridium ore?
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See also
Matching words
- Words starting with i
- Words starting with ir
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