supermassive
adjective physics specialized (also super-massive) uk/ˌsuː.pəˈmæs.ɪv/ us/ˌsuː.pɚˈmæs.ɪv/
（天体）超大质量的
A supermassive star or black hole (= a region in space where gravity is so strong that not even light can escape) that has an extremely large mass (= contains a very large amount of matter).
Supermassive black holes can be as big as our entire solar system.
It is very unusual to be able to see the death of super-massive stars. 能够看到超大质量恒星的死亡是非常不寻常的。
- More examples
- A supermassive black hole can have a mass millions of times greater than that of the sun.
- Supermassive stars like this are extremely rare in the universe.
- There may be a supermassive black hole at the centre of the galaxy.
- Quasars are believed to be powered by gas falling into supermassive black holes.