sal prunella
A nitrate of potassium that has been melted over a fire and then cast into balls,…A nitrate of potassium that has been melted over a fire and then cast into balls, cakes or sticks.
Meaning
2 senses(uncountable)A nitrate of potassium that has been melted over a fire and then cast into balls, cakes or sticks.
(obsolete, uncountable)Sodium nitrite.
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable