cooperite
A grey mineral consisting mostly of platinum sulfideA grey mineral consisting mostly of platinum sulfide (PtS).
Meaning
1 senses(uncountable)A grey mineral consisting mostly of platinum sulfide (PtS).
Origin
From Cooper + -ite, after metallurgist Richard A. Cooper.From Cooper + -ite, after metallurgist Richard A. Cooper.
Wiktionary, CC BY-SA 4.0 · source
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable