Speakur

Word Pronunciation & Dictionary

lanthanum

/ˈlænθənəm/

Word Rarity Very rare

Frequency: 2.05 in modern English

Syllables
lan-thanum
IPA
/ˈlænθənəm/
14
Scrabble Score
9
Letters
3
Syllables
7
Unique Chars

Meaning

noun

A chemical element (symbol La) with an atomic number of 57: a soft, ductile, silvery-white metal that tarnishes slowly when exposed to air.

Uncountable

noun

An atom of this element.

Countable

Etymology

From Ancient Greek λανθάνω (lanthánō, “to escape notice”) + -um (“a chemical element”), because it had gone long undetected in mineral ores.

Word Breakdown

Usage

Inflected Forms

lanthanums (plural) lantanium (alternative) lanthanium (alternative)

Derived Forms

dilanthanum lanthanian organolanthanum radiolanthanum

Phrases

lanthanum carbonate lanthanum chloride lanthanum glass lanthanum nitrate lanthanum oxide lanthanum oxybromide lanthanum sesquioxide rare earth

Frequently Paired Words

lanthana lanthanate lanthanide lanthanite lanthanoid lanthanon Fosrenol rare earth

Synonyms

La atomic number 57

Questions

How do you pronounce lanthanum?
The recorded pronunciation is /ˈlænθənəm/.
What does lanthanum mean?
A chemical element (symbol La) with an atomic number of 57: a soft, ductile, silvery-white metal that tarnishes slowly when exposed to air.
Where does lanthanum come from?
From Ancient Greek λανθάνω (lanthánō, “to escape notice”) + -um (“a chemical element”), because it had gone long undetected in mineral ores.

How to pronounce lanthanum

  1. Open the pronunciation page — Open the Speakur entry for “lanthanum”.
  2. Read the phonetic spelling — Read the IPA spelling (/ˈlænθənəm/) so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “lanthanum”.
  4. Repeat and practice — Say “lanthanum” aloud, matching stress and vowels until it feels natural.