Meanings
plural rubidiums
- uncountableThe chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.
- countableA single atom of this element.
Synonyms & antonyms
nouna soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- Proto-Indo-European*h₁rewdʰ-
- Proto-Indo-European*dʰeh₁-
- Latinrūbidus
- New Latinrubidium
- Englishrubidium
A New Latin word derived by German chemist R. W. Bunsen in 1861, from Latin rūbidus (“red”) because its spectrum has two red lines.
More words from Latin
Full word history & related roots →Translations
Afrikaans rubidium
- rubidiumelement with atomic number 37
Arabic رُوبِيدِيُوم
- رُوبِيدِيُوم (rūbīdiyūm)element with atomic number 37
Basque rubidioa
- rubidioaelement with atomic number 37
Bulgarian руби́дий
- руби́дий (rubídij)element with atomic number 37
Catalan rubidi
- rubidielement with atomic number 37
Chinese Mandarin 銣 /铷
- 銣 /铷 (rú)element with atomic number 37
Czech rubidium
- rubidiumelement with atomic number 37
Danish rubidium
- rubidiumelement with atomic number 37
Dutch rubidium
- rubidiumelement with atomic number 37
Esperanto rubidio
- rubidioelement with atomic number 37
Estonian rubiidium
- rubiidiumelement with atomic number 37
Finnish rubidium
- rubidiumelement with atomic number 37
French rubidium
- rubidiumelement with atomic number 37
German Rubidium
- Rubidiumelement with atomic number 37
Greek ρουβίδιο
- ρουβίδιο (rouvídio)element with atomic number 37
Hebrew רובידיום
- רובידיום (rubídyum)element with atomic number 37
Hindi दीपातु
- दीपातु (dīpātu)element with atomic number 37
Hungarian rubídium
- rubídiumelement with atomic number 37
Icelandic rúbidín
- rúbidínelement with atomic number 37
Irish rúbaidiam
- rúbaidiamelement with atomic number 37
Italian rubidio
- rubidioelement with atomic number 37
Japanese ルビジウム
- ルビジウム (rubijiumu)element with atomic number 37
Korean 루비듐
- 루비듐 (rubidyum)element with atomic number 37
Latin rūbidium
- rūbidiumelement with atomic number 37
Latvian rubīdijs
- rubīdijselement with atomic number 37
Lithuanian rubidis
- rubidiselement with atomic number 37
Malay rubidium
- rubidiumelement with atomic number 37
Norwegian rubidium
- rubidiumelement with atomic number 37
Persian روبیدیم
- روبیدیم (rubidiyom)element with atomic number 37
Polish rubid
- rubidelement with atomic number 37
Portuguese rubídio
- rubídioelement with atomic number 37
Romanian rubidiu
- rubidiuelement with atomic number 37
Russian руби́дий
- руби́дий (rubídij)element with atomic number 37
Scottish Gaelic rubaidiam
- rubaidiamelement with atomic number 37
Slovak rubídium
- rubídiumelement with atomic number 37
Spanish rubidio
- rubidioelement with atomic number 37
Swedish rubidium
- rubidiumelement with atomic number 37
Tagalog rubidyo
- rubidyoelement with atomic number 37
Tamil அர்மிமம்
- அர்மிமம் (armimam)element with atomic number 37
Thai รูบิเดียม
- รูบิเดียม (ruu-bì-dîiam)element with atomic number 37
Turkish rubidyum
- rubidyumelement with atomic number 37
Ukrainian рубі́дій
- рубі́дій (rubídij)element with atomic number 37
Vietnamese rubiđi
- rubiđielement with atomic number 37
Welsh rwbidiwm
- rwbidiwmelement with atomic number 37
Cite this entry
rubidium. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/rubidium
“rubidium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/rubidium. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “rubidium,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/rubidium.
Source: rubidium on Wiktionary, CC BY-SA 4.0.