Definition:
Brown coal is a type of coal that is darker than peat but lighter than bituminous coal. It is often used as a fuel for electricity generation and is known for having a lower energy content compared to other types of coal.
In more advanced discussions, you might encounter terms like "lignite," which is another name for brown coal. You might also hear about the environmental impacts of using brown coal in energy production compared to cleaner energy sources.
While "brown coal" specifically refers to a type of coal, the individual words "brown" and "coal" have their own meanings: - Brown: This is a color that is a mix of red, yellow, and black. - Coal: This is a black or brownish-black rock that is used as a fuel source.
There are no specific idioms or phrasal verbs directly related to "brown coal." However, you may come across phrases like "burning coal" when discussing energy production.
Brown coal is an important term in discussions about energy sources. It is a type of coal that is less energy-rich than other types but is still widely used in electricity generation.