Meanings
plural lanthanums · alternative lantanium · alternative lanthanium
- uncountableA chemical element (symbol La) with an atomic number of 57: a soft, ductile, silvery-white metal that tarnishes slowly when exposed to air.
- countableAn atom of this element.
Synonyms & antonyms
nouna white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
From Ancient Greek λανθάνω (lanthánō, “to escape notice”) + -um (“a chemical element”), because it had gone long undetected in mineral ores.
Full word history & related roots →Translations
Afrikaans lantaan
- lantaanmetallic element
Arabic لَانْثَانُوم, لَانْتَانُوم
- لَانْثَانُوم (lānṯānūm)metallic element
- لَانْتَانُوم (lāntānūm)metallic element
- لَنْثَنُوم (lanṯanūm)metallic element
- لَنْتَنُوم (lantanūm)metallic element
Basque lantanoa
- lantanoametallic element
Bulgarian ланта́н
- ланта́н (lantán)metallic element
Catalan lantani
- lantanimetallic element
Chinese Mandarin 鑭 /镧
- 鑭 /镧 (làn)metallic element
Czech lanthan
- lanthanmetallic element
Danish lanthan
- lanthanmetallic element
Dutch lanthaan, lanthanium
- lanthaanmetallic element
- lanthaniummetallic element
Esperanto lantano
- lantanometallic element
Estonian lantaan
- lantaanmetallic element
Finnish lantaani
- lantaanimetallic element
French lanthane
- lanthanemetallic element
German Lanthan
- Lanthanmetallic element
Greek λανθάνιο
- λανθάνιο (lanthánio)metallic element
Hebrew לנתן
- לנתן (lantán)metallic element
Hindi सुजारला
- सुजारला (sujārlā)metallic element
Hungarian lantán
- lantánmetallic element
Icelandic lanþan
- lanþanmetallic element
Irish lantainam
- lantainammetallic element
Italian lantanio
- lantaniometallic element
Japanese ランタン
- ランタン (rantan)metallic element
Korean 란탄, 란타늄
- 란탄 (rantan)metallic element
- 란타늄 (rantanyum)metallic element
- 란타넘 (rantaneom)metallic element
Latin lanthanum
- lanthanummetallic element
Latvian lantāns
- lantānsmetallic element
Lithuanian lantanas
- lantanasmetallic element
Malay lantanum
- lantanummetallic element
Norwegian lantan
- lantanmetallic element
Polish lantan
- lantanmetallic element
Portuguese lantânio
- lantâniometallic element
Romanian lantan
- lantanmetallic element
Russian ланта́н
- ланта́н (lantán)metallic element
Scottish Gaelic lantanam
- lantanammetallic element
Slovak lantán
- lantánmetallic element
Spanish lantano
- lantanometallic element
Swedish lantan
- lantanmetallic element
Tagalog lantano
- lantanometallic element
Tamil மாய்மம்
- மாய்மம் (māymam)metallic element
Thai แลนทานัม
- แลนทานัม (lɛɛn-taa-nâm)metallic element
Turkish lantan
- lantanmetallic element
Ukrainian ланта́н
- ланта́н (lantán)metallic element
Vietnamese lantan
- lantanmetallic element
Welsh lanthanwm
- lanthanwmmetallic element
Cite this entry
lanthanum. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/lanthanum
“lanthanum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/lanthanum. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “lanthanum,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/lanthanum.
Source: lanthanum on Wiktionary, CC BY-SA 4.0.