brown dwarf


Definition of BROWN DWARF

:  a celestial object that is much smaller than a normal star and has insufficient mass to sustain nuclear fusion but that is hot enough to radiate energy especially at infrared wavelengths

First Known Use of BROWN DWARF



Next Word in the Dictionary: brown earthPrevious Word in the Dictionary: brown duckAll Words Near: brown dwarf
July 02, 2015
apprehension Hear it
comprehension or the fear of future evil
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears