Meanings
- uncountablechemistryThe chemical element (symbol Og) with atomic number 118. It is the heaviest known element. Highly radioactive, it does not occur naturally. Originally expected to be a noble gas, it is now predicted to be a reactive metallic solid, and a semiconductor or a post-transition metal.
SINGAPORE - The four new elements announced in December last year have received their new names: Nihonium (Nh), moscouvium (Mc), tennessine (Ts) and oganesson (Og).
2016 June 9, “Meet the periodic table's 4 new elements: Nihonium, moscouvium, tennessine and oganesson”, in The Straits Times2 more examples
In January 2016 the International Union of Pure and Applied Chemistry (IUPAC) announced the discovery of four new elements, so completing the seventh row of the periodic table. They have since been named as nihonium, Nh, muscovium^([sic]), Mc, tennessine, Ts, and organesson^([sic]), Og. The procedures for naming new elements are clearly laid out by IUPAC.
2018, Mark Weller, Tina Overton, Fraser Armstrong, Jonathan Rourke, chapter 1, in Inorganic Chemistry, Oxford University Press, →ISBN, page 21Researchers carefully choose the makeup of the beam and the target in hopes of producing a designer atom of the element desired. That’s how the four newest elements were created: nihonium (element 113), moscovium (115), tennessine (117) and oganesson (118) (SN Online: 11/30/16).
2019 February 27, Emily Conover, “Extreme elements push the boundaries of the periodic table”, in Science News- countablechemistryAn atom of this element.
Synonyms & antonyms
Origin
- Biblical Hebrewיהוה (YHWH)
- Biblical Hebrewיְהוֹ־ (yəhō-)
- Biblical Hebrewחַנּוּן (ḥannūn)
- Biblical Hebrewיוֹחָנָן (yōḥɔnɔn)
- Ancient GreekἸωάννης (Iōánnēs)
- ArmenianՀովհաննես (Hovhannes)
- ArmenianՀովհաննիսյան (Hovhannisyan)
- RussianОганеся́н (Oganesján)
- EnglishOganessian
- Proto-Indo-European*kerh₃-der.?
- Latincarbōnem
- Frenchcarbone
- Englishcarbonbf.
- Englishoganesson
From Oganessian + -on. Promulgated in June 2016 by IUPAC based on recommendations of the Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory to honor Russian-Armenian physicist Yuri Oganessian (born 1933) who researched superheavy elements. Suffix -on, rather than -ium, is because it is a noble gas (like neon or argon).
Full word history & related roots →Translations
Arabic أُوغَانِيسُون
- أُوغَانِيسُون (ʔūḡānīsūn)chemical element
Bulgarian оганесон
- оганесон (oganeson)chemical element
Catalan oganessó
- oganessóchemical element
Chinese Mandarin 鿫
- 鿫 (ào)chemical element
Danish oganesson
- oganessonchemical element
Esperanto oganesono
- oganesonochemical element
Finnish oganesson
- oganessonchemical element
French oganesson
- oganessonchemical element
German Oganesson
- Oganessonchemical element
Greek ογκανέσσιο
- ογκανέσσιο (ogkanéssio)chemical element
Hungarian oganeszon
- oganeszonchemical element
Icelandic oganesson
- oganessonchemical element
Irish óganasan
- óganasanchemical element
Italian oganesson
- oganessonchemical element
Japanese オガネソン
- オガネソン (oganeson)chemical element
Korean 오가네손
- 오가네손 (oganeson)chemical element
Latvian oganesons
- oganesonschemical element
Norwegian Bokmål oganesson
- oganessonchemical element
Persian اوگانسون
- اوگانسون (ogâneson)chemical element
Polish oganeson
- oganesonchemical element
Portuguese oganésson, oganessônio
- oganéssonchemical element
- oganessôniochemical element
Russian оганесон
- оганесон (oganeson)chemical element
Slovak oganesón
- oganesónchemical element
Spanish oganesón
- oganesónchemical element
Swedish oganesson
- oganessonchemical element
Ukrainian оґанесон
- оґанесон (oganeson)chemical element
Vietnamese oganesson
- oganessonchemical element
Welsh oganeson
- oganesonchemical element
Cite this entry
oganesson. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/oganesson
“oganesson.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/oganesson. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “oganesson,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/oganesson.
Source: oganesson on Wiktionary, CC BY-SA 4.0.