natroniobite
A monoclinic mineral containing niobium, oxygen, and sodiumA monoclinic mineral containing niobium, oxygen, and sodium.
Meaning
1 senses(uncountable)A monoclinic mineral containing niobium, oxygen, and sodium.
Origin
From natro- + niobite.From natro- + niobite.
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Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable