rubidium

A New Latin word derived by German chemist R. W. Bunsen in 1861, from Latin rūbidus (“red”) because its spectrum has two red lines.^[1]

• (UK) enPR: ro͞obĭd'ēəm, IPA^(key): /ˌɹuːˈbɪd.i.əm/

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rubidium (countable and uncountable, plural rubidiums)

2. (uncountable) The chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.
3. (countable) A single atom of this element.

• rubidic, rubidian

• Rubidium on the British Royal Society of Chemistry's online periodic table

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rubidium (uncountable)

1. rubidium

• IPA^(key): [ˈrubiːdɪjum]
• Hyphenation: ru‧bi‧dium

rubidium n

1. rubidium

From Latin rūbidus +‎ -ium.

rubidium n (singular definite rubidiummet, not used in plural form)

1. rubidium

• “rubidium” in Den Danske Ordbog

Borrowed from German Rubidium.

• IPA^(key): /ˌryˈbi.di.ʏm/

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• Hyphenation: ru‧bi‧di‧um

rubidium n (uncountable, no diminutive)

1. rubidium (chemical element) [from 1862]

Internationalism (see English rubidium).

• IPA^(key): /ˈrubidium/, [ˈrubiˌdium]
• Rhymes: -ium
• Syllabification^(key): ru‧bi‧di‧um
• Hyphenation^(key): ru‧bi‧di‧um

rubidium

1. rubidium

• IPA^(key): /ʁy.bi.djɔm/

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rubidium m (uncountable)

1. rubidium

• “rubidium”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012

• (Classical Latin) IPA^(key): [ruːˈbɪ.di.ũː]
• (modern Italianate Ecclesiastical) IPA^(key): [ruˈbiː.di.um]

rūbidium n (genitive rūbidiī); second declension

1. rubidium

Second-declension noun (neuter).

• IPA^(key): [ʁyˈbi˦ɖɔ˧m]

rubidium n

1. (uncountable) rubidium
2. A part of rubidium

From English rubidium, from New Latin rubidium, from Latin rūbidus.

• IPA^(key): [rubidiom], [rubidiəm]
• Rhymes: -iom, -jom, -om

rubidium

1. rubidium (element with atomic number 37)

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rubidium n (uncountable)

1. rubidium

• “rubidium”, in Svensk ordbok [Dictionary of Swedish] (in Swedish)
• “rubidium”, in Svenska Akademiens ordlista [Wordlist of the Swedish Academy] (in Swedish)
• “rubidium”, in Svenska Akademiens ordbok [Dictionary of the Swedish Academy] (in Swedish)
• Svensk MeSH