astatine

A1S1T1A1T1I1N1E1
UK/ˈastətiːn/US/ˈæstəˌtin/

noun

A highly radioactive chemical element (symbol At), one of the halogens, with atomic number 85.

Similar
RareScrabble 8

Meanings

nounastatine (countable and uncountable, plural astatines)

plural astatines

  1. countableuncountablechemistryA highly radioactive chemical element (symbol At), one of the halogens, with atomic number 85.

    Astatine, for instance, is practically unstudied. It has a name and a place on the periodic table (next to Marie Curie's polonium), but almost nothing else.

    2003, Bill Bryson, A Short History of Nearly Everything, BCA, page 221

    Synonyms: alabamine, anglohelvetium

    1. countablechemistryAn atom of this element.

      Synonyms: alabamine, anglohelvetium

Synonyms & antonyms

nounA highly radioactive chemical element (symbol At), one of the halogens, with atomic number 85.

nounAn atom of this element.

More synonyms by meaning

nouna highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium

Similar
Atatomic number 85
Also see

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Hellenic*ə-
  4. Ancient Greekᾰ̓- (ă-)
  5. Proto-Indo-European*steh₂-
  6. Proto-Indo-European*stísteh₂ti
  7. Proto-Hellenic*hístāmi
  8. Ancient Greekῐ̔́στημῐ (hĭ́stēmĭ)
  9. Ancient Greekἄστατος (ástatos)
  10. Englishastatine

From Ancient Greek ἄστατος (ástatos, “unstable”) + -ine.

Full word history & related roots →

Translations

Afrikaans astaat
  • astaatthe chemical element
Arabic أَسْتَاتِين
  • أَسْتَاتِين (ʔastātīn)the chemical element
Basque astatoa
  • astatoathe chemical element
Bengali অ্যাস্টাটিন
  • অ্যাস্টাটিন (êsṭaṭin)the chemical element
Bulgarian астати́н
  • астати́н (astatín)the chemical element
Catalan àstat
  • àstatthe chemical element
Chinese Mandarin 砹
  • 砹 (ài)the chemical element
Czech astat
  • astatthe chemical element
Danish astat
  • astatthe chemical element
Dutch astatium, astaat
  • astatiumthe chemical element
  • astaatthe chemical element
Esperanto astato
  • astatothe chemical element
Estonian astaat
  • astaatthe chemical element
Finnish astatiini
  • astatiinithe chemical element
French astate
  • astatethe chemical element
German Astat, Astatin
  • Astatthe chemical element
  • Astatinthe chemical element
Greek άστατο
  • άστατο (ástato)the chemical element
Hebrew אסטטין
  • אסטטין (astatín)the chemical element
Hindi लावणी
  • लावणी (lāvṇī)the chemical element
Hungarian asztácium
  • asztáciumthe chemical element
Icelandic astat
  • astatthe chemical element
Indonesian astatin
  • astatinthe chemical element
Irish astaitín
  • astaitínthe chemical element
Italian astato
  • astatothe chemical element
Japanese アスタチン
  • アスタチン (asutachin)the chemical element
Korean 아스타틴
  • 아스타틴 (aseutatin)the chemical element
Latin astatium
  • astatiumthe chemical element
Latvian astats
  • astatsthe chemical element
Lithuanian astatinas
  • astatinasthe chemical element
Malay astatin
  • astatinthe chemical element
Norwegian Bokmål astat
  • astatthe chemical element
Persian استاتین
  • استاتین (astâtin)the chemical element
Polish astat
  • astatthe chemical element
Portuguese astato
  • astatothe chemical element
Romanian astatin, astatiniu
  • astatinthe chemical element
  • astatiniuthe chemical element
Russian аста́т, астати́н
  • аста́т (astát)the chemical element
  • астати́н (astatín)the chemical element
Scottish Gaelic astatain
  • astatainthe chemical element
Slovak astat
  • astatthe chemical element
Spanish astato
  • astatothe chemical element
Swedish astat
  • astatthe chemical element
Tamil அஸ்தாதைன்
  • அஸ்தாதைன் (astātaiṉ)the chemical element
Thai แอสทาทีน
  • แอสทาทีน (ɛ́ɛs-taa-tiin)the chemical element
Turkish astat, astatin
  • astatthe chemical element
  • astatinthe chemical element
Ukrainian аста́т
  • аста́т (astát)the chemical element
Vietnamese astatin
  • astatinthe chemical element
Welsh astatin
  • astatinthe chemical element

Rhymes & wordplay

Anagrams

Cite this entry
APA

astatine. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/astatine

MLA

“astatine.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/astatine. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “astatine,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/astatine.

Source: astatine on Wiktionary, CC BY-SA 4.0.