lanthanum
English
| Chemical element | |
|---|---|
| La | |
| Previous: barium (Ba) | |
| Next: cerium (Ce) | |
Alternative forms
- lantanium (obsolete)
- lanthanium (obsolete)
Etymology
From Ancient Greek λανθάνω (lanthánō, “to escape notice”) + -um (“a chemical element”), because it had gone long undetected in mineral ores.
Pronunciation
- enPR: lăn'thənəm, IPA(key): /ˈlænθənəm/
Audio (US) (file)
Noun
lanthanum (countable and uncountable, plural lanthanums)
- (uncountable) A chemical element (symbol La) with an atomic number of 57: a soft, ductile, silvery-white metal that tarnishes slowly when exposed to air.
- (countable) An atom of this element.
Synonyms
Derived terms
terms derived from lanthanum
- lanthanum carbonate
- lanthanum chloride
- lanthanum glass
- lanthanum nitrate
- lanthanum oxide
- lanthanum oxybromide
- lanthanum sesquioxide
Related terms
terms related to lanthanum
- lanthana
- lanthanate
- lanthanide
- lanthanite
- lanthanoid
- lanthanon
Translations
metallic element
|
See also
- Fosrenol
- rare earth
Latin
Pronunciation
- (Classical) IPA(key): /ˈlan.tʰa.num/, [ˈɫ̪än̪t̪ʰänʊ̃ˑ]
- (modern Italianate Ecclesiastical) IPA(key): /ˈlan.ta.num/, [ˈlän̪t̪änum]
Noun
lanthanum n (genitive lanthanī); second declension
- Lua error in Module:utilities at line 142: attempt to perform arithmetic on local 'h' (a nil value)
Declension
Lua error in Module:utilities at line 142: attempt to perform arithmetic on local 'h' (a nil value)
Limburgish
Pronunciation
- IPA(key): [lɑ˧nˈðaː˨nɔ˧m]
Noun
lanthanum n
- (uncountable) Lua error in Module:utilities at line 142: attempt to perform arithmetic on local 'h' (a nil value)
- A part of lanthanum
Inflection
Declension of lanthanum
| Root singular | Root plural | Diminutive singular | Diminutive plural | |
|---|---|---|---|---|
| Nominative | Lua error in Module:utilities at line 142: attempt to perform arithmetic on local 'h' (a nil value) | lanthana | lanthaneke | lanthanekes |
| Genitive | lanthanums | lanthana | lanthanekes | lanthanekes |
| Locative | lanthaneës | lanthaneëser | lanthaneëske | lanthaneëskes |
| Dative¹ | lanthanumme | — | lanthaneke | — |
| Accusative¹ | Lua error in Module:utilities at line 142: attempt to perform arithmetic on local 'h' (a nil value) | — | lanthaneke | — |
| ¹Dative and accusative are nowadays obsolete, the nominative is used instead. | ||||
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