Puzzles & Games
Word of the Day
Apps by Dictionary
trending last week?
a single hollow tract of nervous tissue that constitutes the central nervous system of chordates and develops into the spinal cord and brain in vertebrates.
a solid double strand of nerve fibers along the length of the body in elongate invertebrates, as earthworms and insects, connecting with a pair of nerve ganglia at each body segment.
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for
is slightly swollen near its head, but this bulge is not yet a brain.
Its nervous system, such as it is, is organized around a simple
running along its back.
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 nerve cord
nernst heat theorem
nerve block anesthesia
nerve growth factor
nerve growth factor antiserum
nerve of pterygoid canal
nerve of tensor muscle of soft palate
nerve of tensor tympani muscle
nerve to stapedius muscle