Speakur

Word Pronunciation & Dictionary

rubidium

/ˌɹuːˈbɪd.i.əm/

Word Rarity Very rare

Frequency: Zipf frequency 2.18 in modern English

Syllables
ru-bid-i-um
IPA
/ˌɹuːˈbɪd.i.əm/
13
Scrabble Score
8
Letters
4
Syllables
6
Unique Chars

Meaning

noun

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

Uncountable

noun

A single atom of this element.

Countable

Etymology

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

Origin

Word Breakdown

Regional Pronunciation

  • British English: /ˌɹuːˈbɪd.i.əm/

Usage

Inflected Forms

rubidiums (plural)

Derived Forms

dirubidium iodrubidium monorubidium organorubidium radiorubidium rubidide trirubidium

Phrases

rubidium auride rubidium chloride rubidium hydroxide rubidium nitrate rubidium oxide rubidium-strontium

Frequently Paired Words

rubidic rubidian

Synonyms

rb atomic number 37

Questions

How do you pronounce rubidium?
The recorded pronunciation is /ˌɹuːˈbɪd.i.əm/.
What does rubidium mean?
The chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.
Where does rubidium come from?
It is traced to Latin.

How to pronounce rubidium

  1. Open the pronunciation page — Open the Speakur entry for “rubidium”.
  2. Read the phonetic spelling — Read the IPA spelling (/ˌɹuːˈbɪd.i.əm/) so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “rubidium”.
  4. Repeat and practice — Say “rubidium” aloud, matching stress and vowels until it feels natural.