noun · 2 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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rĕntgen'ēəm
/ɹɛntˈɡɛniəm/
rŭntgen'ēəm
/ɹʌntˈɡɛniəm/
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1
noun
Meaning 1
A transuranic chemical element (symbol Rg) with atomic number 111.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
a radioactive transuranic element
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: Rg, element 111, atomic number 111
Antonyms: none provided
Broader terms: chemical element, element
History
Etymology
From Roentgen + -ium. Named after Wilhelm Roentgen.
Across languages
Translations
45 source translations are retained for this English entry.
Arabic:
رُونْتْجِينْيُوم
(rontginyum)
— chemical element
Armenian:
ռենտգենիում
(ṙentgenium)
— chemical element
Bulgarian:
рьонтгений
(rjontgenij)
— chemical element
Catalan:
roentgeni
— chemical element
Chinese Mandarin:
錀 /𬬭
(lún)
— chemical element
Czech:
roentgenium
— chemical element
Danish:
røntgenium
— chemical element
Dutch:
roentgenium
— chemical element
Esperanto:
rentgenio
— chemical element
Estonian:
röntgeenium
— chemical element
Finnish:
röntgenium
— chemical element
French:
roentgenium
— chemical element
Georgian:
რენტგენიუმი
(renṭgeniumi)
— chemical element
German:
Roentgenium
— chemical element
German:
Röntgenium
— chemical element
Greek:
ρεντγκένιο
(rentgkénio)
— chemical element
Hebrew:
רנטגניום
— chemical element
Hungarian:
röntgénium
— chemical element
Ido:
rentgeno
— chemical element
Italian:
roentgenio
— chemical element
Japanese:
レントゲニウム
(rentogeniumu)
— chemical element
Korean:
뢴트게늄
(roenteugenyum)
— chemical element
Northern Kurdish:
ûnûnûnyûm
— chemical element
Latvian:
rentgenijs
— chemical element
Lithuanian:
rentgenis
— chemical element
Malay:
roentgenium
— chemical element
Norwegian:
roentgenium
— chemical element
Polish:
roentgen
— chemical element
Portuguese:
roentgênio
— chemical element
Portuguese:
roentgénio
— chemical element
Romanian:
roentgeniu
— chemical element
Russian:
рентге́ний
(rentgénij)
— chemical element
Serbo-Croatian:
roentgenij
— chemical element
Serbo-Croatian:
рентгенијум
— chemical element
Serbo-Croatian:
рендгениј
— chemical element
Serbo-Croatian:
rentgenijum
— chemical element
Serbo-Croatian:
rendgenij
— chemical element
Slovak:
röntgénium
— chemical element
Spanish:
roentgenio
— chemical element
Swedish:
röntgenium
— chemical element
Tamil:
யுனுனுனியம்
(yuṉuṉuṉiyam)
— chemical element
Thai:
เรินต์เกเนียม
(rəən-gee-nîiam)
— chemical element
Turkish:
röntgenyum
— chemical element
Ukrainian:
рентґе́ній
(rentgénij)
— chemical element
