thorium

See also: Thorium

English

Chemical element (edit)
Th Atomic number 90 thorium
Classification data Period 7 Group 3 Block f-block Class actinide
Previous: ← actinium (Ac)
Next: protactinium (Pa) →
English Wikipedia article on Thorium

Etymology

Etymology tree

English Thor

Proto-Indo-European *-om

Proto-Italic *-om

Latin -umder.

English -ium

English thorium

From Thor + -ium.

Pronunciation

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

• Audio (US):

  (file)

• Audio (General American):

  (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

• althupite
• dithorium
• eka-thorium
• mesothorium
• nonthorium
• organothorium
• radiothorium
• thorate
• thoria
• thorian
• thoriate
• thoriated
• thoric
• thoriferous
• 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
• trithorium
• uranium-thorium dating

Related terms

• Thor
• thorite
• thorotrast

Translations

chemical element

• Afrikaans: torium (af)
• Albanian: torium
• Arabic: ثُورِيُوم m (ṯūriyūm)
• 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
• Frisian:

  West Frisian: thorium

• 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
• Marathi: थोरियम n (thoriyam)
• 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

  Latin: 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

Danish

Chemical element (edit)
Th Atomic number 90 thorium
Classification data Period 7 Group 3 Block f-block Class actinide
Previous: ← actinium (Ac)
Next: protactinium (Pa) →

Etymology

From Old Norse Þórr +‎ -ium.

Noun

thorium n (singular definite thoriummet, not used in plural form)

1. thorium

Declension

Declension of thorium

neuter gender	singular
	indefinite	definite
nominative	thorium	thoriummet
genitive	thoriums	thoriummets

References

• “thorium” in Den Danske Ordbog

Dutch

Chemical element (edit)
Th Atomic number 90 thorium
Classification data Period 7 Group 3 Block f-block Class actinide
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, no diminutive)

1. thorium [from mid 19th c.]

Derived terms

• thoriumcentrale
• thoriumreactor

French

Pronunciation

• IPA^(key): /tɔ.ʁjɔm/

• Audio (France (Brétigny-sur-Orge)):

  (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

Chemical element (edit)
Th Atomic number 90 thorium
Classification data Period 7 Group 3 Block f-block Class actinide
Previous: ← actinium (Ac)
Next: protactinium (Pa) →
Latin Wikipedia article on Thorium

Pronunciation

• (Classical Latin) IPA^(key): [ˈtʰoː.ri.ũː]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈtɔː.ri.um]

Noun

thōrium n (genitive thōriī); second declension

1. (New Latin) thorium

Declension

Second-declension noun (neuter).

	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.