noun
Meaning 1
A dark orthorhombic mineral containing calcium, cerium, niobium, oxygen, tantalum, thallium, titanium, uranium and yttrium
Definition source: English Wiktionary via Wiktextract
Usage: 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