violet phosphorus
A form of phosphorus that can be produced by day-long annealing of red phosphorus…A form of phosphorus that can be produced by day-long annealing of red phosphorus above 550 °C.
Meaning
1 senses(uncountable)A form of phosphorus that can be produced by day-long annealing of red phosphorus above 550 °C.
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable