Is calcined magnesia formal or common?

Calcined magnesia, or magnesium oxide (MgO), is a formal chemical term used in scientific and industrial contexts. It refers specifically to the product obtained by heating magnesium carbonate or magnesium hydroxide to remove carbon dioxide or water. While it may not be commonly referenced in everyday conversation, it is widely used in various applications, including refractory materials and as a dietary supplement, making it familiar in certain fields.