Word.ws English Dictionary

rubidium

/ˌɹuːˈbɪd.i.əm/

rubidium noun: the chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.

rubidium: the chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali...
Image: Dnn87, CC BY 3.0, via Wikimedia Commons

Noun

rubidium (countable and uncountable, plural rubidiums)

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

rubidium meaning in Hindi, Tamil, Telugu and Tagalog

rubidium in Hindi

element with atomic number 37
दीपातु dīpātu

rubidium in Tamil

element with atomic number 37
அர்மிமம் armimam

rubidium in Telugu

rubidium
రుబీడియము rubīḍiyamu

rubidium in Tagalog

element with atomic number 37
rubidyo
More languagesFewer languages
rubidium in Arabic
رُوبِيدِيُوم rūbīdiyūm
rubidium in Malay
rubidium
rubidium in Thai
รูบิเดียม ruu-bì-dîiam
rubidium in Vietnamese
rubiđi

Forms of rubidium

pluralrubidiums

Origin of 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.

Words formed from rubidium

Phrases with rubidium

Questions about rubidium

What does rubidium mean?
Rubidium means the chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.
What is rubidium in Hindi?
Rubidium in Hindi is दीपातु (dīpātu). See Rubidium meaning in Hindi.
What part of speech is rubidium?
Rubidium is a noun.
How do you pronounce rubidium?
Rubidium is pronounced /ˌɹuːˈbɪd.i.əm/ (UK).
What is the plural of rubidium?
The plural of rubidium is rubidiums.

Words near rubidium in the dictionary

  1. rubidian
  2. rubidic
  3. rubidide
  4. rubidides
  5. rubidine
  6. rubidium
  7. rubidium chloride
  8. rubidium nitrate
  9. rubidium oxide
  10. rubidium oxides
  11. rubidium-strontium

Source and license

Adapted from Wiktionary: rubidium (page history and authors); రుబీడియము (Telugu) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-rubidium.wav, LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-rubidium.wav.

Cite this entry: “rubidium.” Word.ws, https://word.ws/rubidium. Based on Wiktionary, CC BY-SA 4.0.