ferrous sulfide
The binary sulfide of ferrous iron, FeS, that occurs in several mineralsThe binary sulfide of ferrous iron, FeS, that occurs in several minerals
Meaning
1 senses(uncountable)The binary sulfide of ferrous iron, FeS, that occurs in several minerals
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable