lanthanum
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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
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
Related terms
terms related to lanthanum
Translations
metallic element
|
See also
Latin
Pronunciation
- (Classical Latin) IPA(key): /ˈlan.tʰa.num/,
- (modern Italianate Ecclesiastical) IPA(key): /ˈlan.ta.num/,
Noun
lanthanum n (genitive lanthanī); second declension
Declension
Second-declension noun (neuter).
| singular | plural | |
|---|---|---|
| nominative | lanthanum | lanthana |
| genitive | lanthanī | lanthanōrum |
| dative | lanthanō | lanthanīs |
| accusative | lanthanum | lanthana |
| ablative | lanthanō | lanthanīs |
| vocative | lanthanum | lanthana |
Limburgish
Pronunciation
Noun
lanthanum n
- (uncountable) lanthanum
- A part of lanthanum