einsteinium
/aɪnˈstaɪni.əm/noun
einsteinium is a noun meaning “A transuranic chemical element (symbol Es) with atomic number 99: a soft, silvery, paramagnetic metal” (English Wiktionary, September 2026). It is spelled E-I-N-S-T-E-I-N-I-U-M, and it appears about once in every 51 million words in written English (wordfreq, 2021 data).
What does einsteinium mean?
noun
- 1
A transuranic chemical element (symbol Es) with atomic number 99: a soft, silvery, paramagnetic metal.
- 2
An atom of this element.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce einsteinium?
- US /aɪnˈstaɪni.əm/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-einsteinium.wav, LL-Q1860_(eng)-Naomi_Persephone_Amethyst_(NaomiAmethyst)-einsteinium.wav, Wikimedia Commons (author and licence on each file's page).
How common is einsteinium?
Einsteinium appears about once in every 51 million words in written English, the 222,788th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Einsteinium in Spanish, French, German and Portuguese
In the sense element with atomic number 99:
| Language | Words |
|---|---|
| French | einsteinium |
| German | Einsteinium |
| Portuguese | einstânio |
| Spanish | einstenio |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does einsteinium come from?
From Einstein + -ium. Named after Albert Einstein.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).