Dictionary

spiral galaxy

noun

Definition of SPIRAL GALAXY

:  a galaxy exhibiting a central nucleus or barred structure from which extend curved arms of higher luminosity —called also spiral nebula
ADVERTISEMENT

First Known Use of SPIRAL GALAXY

1913

Browse

Next Word in the Dictionary: spiral gearPrevious Word in the Dictionary: spiraleAll Words Near: spiral galaxy
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