Dictionary.com
Thesaurus.com

supermassive

British  
/ ˌsuːpəˈmæsɪv /

adjective

  1. (of a black hole or star) having a mass in the range of millions or billions of times that of the sun

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Observations from the X-Ray Imaging and Spectroscopy Mission, known as XRISM, are providing new evidence that supermassive black holes could be preventing these giant galaxies from forming as many stars as expected.

From Science Daily • Jun. 19, 2026

Most galaxies contain a supermassive black hole at their center.

From Science Daily • Jun. 5, 2026

Blazars are active galactic nuclei powered by supermassive black holes that shoot enormous jets of plasma directly toward Earth.

From Science Daily • May 24, 2026

While most galaxies contain supermassive black holes, only a small fraction produce enormous jets of magnetized plasma that emit radio waves.

From Science Daily • Apr. 13, 2026

Turned out the tow truck guy was right and my parents’ car was going to cost them a supermassive amount of money.

From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "supermassive" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com