Puzzles & Games
Word of the Day
Apps by Dictionary
trending last week?
any of the elongated and curved spiral sections that are connected to the center of a spiral galaxy.
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for
Previous models had suggested that a single embedded planet would produce a
on each side of such a disk.
Start worrying in a few million years about a cosmic dust collision, when the sun hits the closest
of our galaxy.
They are often chaotic in appearance, with neither a nuclear bulge nor any trace of
The astronomers tried to use the measured speed of the winds from the stars compared to the actual expansion of the
It's literally billions of stars comprising our galaxies next great
across from us.
Discover our greatest slideshows
Dough, Clams, and Greenbacks:...
7 Ways to Say Thank You
All in One Basket: 8 Eggcentric...
The Hair of the Dog: 9 Dog Idioms...
Browse more topics on our blog
What Is the Difference Between Discreet and Discrete?
Learn the correct uses of these two commonly confused homophones.
What Character Was Removed from the Alphabet?
What mistaken pronunciation gave this character its name?
This small mark has two primary uses: to signify possession or omitted letters.
How Do I Get a Word into the Dictionary?
People invent new words all the time, but which ones actually make it?
Word of the Day
Difficulty index for
Few English speakers likely know this word
Word Value for
Words With Friends
Nearby words for spiral arm
spiral bevel gear
spiral canal of cochlea
spiral canal of modiolus
spiral fold of cystic duct
spiral ganglion of cochlea
spiral ligament of cochlea
spiral of archimedes
spiral vein of modiolus