lanthanum
lanthanum · lanthanums
лантан
лантан
Lanthan
A chemical element with an atomic number of 57: a soft, ductile, silvery-white metal…A chemical element (symbol La) with an atomic number of 57: a soft, ductile, silvery-white metal that tarnishes slowly when exposed to air.
/ˈlænθənəm/
Meaning
2 senses(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.
Lanthan
ланта́нlantán
ланта́нlantán
a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
(countable)An atom of this element.
Translations
9 languagesУкраїнська
By meaning 1
metallic element:
Русский
By meaning 1
metallic element:
Deutsch
By meaning 1
metallic element:
Origin
From Ancient Greek λανθάνω (lanthánō, “to escape notice”) + -um (“a chemical element”), beFrom Ancient Greek λανθάνω (lanthánō, “to escape notice”) + -um (“a chemical element”), because it had gone long undetected in mineral ores.
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Forms
plural: lanthanumsSynonyms
2 synonymsClose in meaning
- a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth:Laatomic number 57
Word family
10 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable