thorium

See also: Thorium

English

Chemical element
Th
Previous: actinium (Ac)
Next: protactinium (Pa)

Etymology

Thor +‎ -ium

Pronunciation

• enPR: thôr'ēəm, IPA^(key): /ˈθɔːɹiəm/

• Audio (US)

  (file)

• Rhymes: -ɔːɹiəm

Noun

thorium (usually uncountable, plural thoriums)

2. A chemical element (symbol Th) with atomic number 90: a weakly radioactive, malleable, moderately hard silvery metal that tarnishes black when exposed to air.

Synonyms

• thorinum (former alternative form; obsolete)

Derived terms

Derived terms

• eka-thorium
• thoria
• thorian
• thoriated
• thoric
• thorinic
• thorium-228
• thorium-230 dating
• thorium chloride
• thorium dioxide
• thorium emanation
• thorium lead
• thorium nitrate
• thorium oxide
• thorium series
• thorium sulfate, thorium sulphate
• thoron
• uranium-thorium dating

Related terms

Related terms

• Thor
• thorite
• thorotrast

Translations

chemical element

• Afrikaans: torium (af)
• Albanian: torium
• Arabic: ثُورْيُوم m (ṯoryum)
• Armenian: թորիում (hy) (tʻorium)
• Asturian: toriu (ast) m
• Basque: torioa
• Belarusian: то́рый m (tóryj)
• Breton: toriom (br)
• Bulgarian: то́рий m (tórij)
• Catalan: tori (ca) m
• Chinese:

  Mandarin: 釷／钍 (zh) (tǔ)

• Cornish: thoryum
• Czech: thorium (cs)
• Danish: thorium (da)
• Dutch: thorium (nl) n
• Esperanto: torio (eo)
• Estonian: toorium (et)
• Faroese: thorium
• Finnish: torium (fi)
• French: thorium (fr) m
• Friulian: tori
• Galician: torio (gl) m
• Georgian: თორიუმი (toriumi)
• German: Thorium (de) n
• Greek: θόριο (el) n (thório)
• Hebrew: תוריום (he) (tóryum)
• Hindi: ह्रसातु (hrasātu)
• Hungarian: tórium (hu)
• Icelandic: þórín (is)
• Irish: tóiriam
• Italian: torio (it) m
• Japanese: トリウム (ja) (toriumu), 釷 (ja)
• Kashubian: tor
• Kazakh: торий (kk) (torii)
• Korean: 토륨 (ko) (toryum)
• Latin: thorium (la)
• Latvian: torijs
• Lithuanian: toris (lt)
• Luxembourgish: Thorium
• Macedonian: ториум m (torium)
• Malay: torium
• Maltese: torjum
• Manx: thorium
• Mongolian: тори (mn) (tori)
• Norwegian:

  Bokmål: thorium n

  Nynorsk: thorium (nn) n

• Polish: tor (pl) m
• Portuguese: tório (pt) m
• Romanian: toriu (ro) n
• Russian: то́рий (ru) m (tórij)
• Scottish Gaelic: tòiriam
• Serbo-Croatian:

  Cyrillic: торијум m, ториј m

  Roman: torijum m, torij (sh) m

• Slovak: thorium
• Slovene: torij (sl)
• Spanish: torio (es) m
• Swedish: torium (sv) n
• Tajik: торий (toriy)
• Tamil: தோரியம் (ta) (tōriyam)
• Thai: ทอเรียม (tɔɔ-rîiam)
• Turkish: toryum (tr)
• Ukrainian: то́рій m (tórij)
• Uzbek: toriy (uz), торий (uz) (toriy)
• Vietnamese: thori
• Volapük: torin (vo)
• Welsh: thoriwm
• West Frisian: thorium

Danish

Noun

thorium

1. thorium

Dutch

Chemical element
Th
Previous: actinium (Ac)
Next: protactinium (Pa)

Etymology

Ultimately from Swedish torium or New Latin thorium. This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.

Pronunciation

• IPA^(key): /ˈtoː.riˌʏm/

• Audio

  (file)

• Hyphenation: tho‧ri‧um

Noun

thorium n (uncountable)

1. thorium [from mid 19th c.]

Derived terms

• thoriumcentrale
• thoriumreactor

French

Pronunciation

• IPA^(key): /tɔ.ʁjɔm/

• Audio

  (file)

Noun

thorium m (uncountable)

1. thorium

Further reading

• “thorium”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

Latin

Pronunciation

• (Classical) IPA^(key): /ˈtʰoː.ri.um/, [ˈt̪ʰoːriʊ̃ˑ]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈto.ri.um/, [ˈt̪ɔːrium]

Noun

thōrium n (genitive thōriī); second declension

1. (New Latin) thorium

Declension

Second-declension noun (neuter).

Case	Singular	Plural
Nominative	thōrium	thōria
Genitive	thōriī	thōriōrum
Dative	thōriō	thōriīs
Accusative	thōrium	thōria
Ablative	thōriō	thōriīs
Vocative	thōrium	thōria

Norwegian Bokmål

Etymology

From Thor, a variant of Tor, from Old Norse Þórr, +‎ -ium.

Noun

thorium n (definite singular thoriumet, uncountable)

1. thorium, chemical element, symbol Th

References

• “thorium” in The Bokmål Dictionary.
• “thorium” in Det Norske Akademis ordbok (NAOB).

Norwegian Nynorsk

Etymology

From Thor, a variant of Tor, from Old Norse Þórr, +‎ -ium.

Noun

thorium n (definite singular thoriumet, uncountable)

1. thorium, chemical element, symbol Th

References

• “thorium” in The Nynorsk Dictionary.