noun
Meaning 1
A radioactive mineral, a carbonate of the rare earth elements lanthanum, cerium, and neodymium.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: chemistry, geography, geology, mineralogy, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided