Word of the Day
Apps by Dictionary
Know how to use "fewer" and "less"? Find out.
the limit, as the norm of the partition of a given surface into sections of area approaches zero, of the sum of the product of the areas times the value of a given function of three variables at some point on each section.
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Discover our greatest slideshows
8 Wintry Words
A lot vs. Alot: 9 Grammatical...
10 Words Coined in the Sci-Fi...
9 Words About Beginnings
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
Under and around the quick background, Surface is improvisation.
These wonderful things Were planted on the surface of a round mind that was to become our present...
Although I mean it, and project the meaning As hard as I can into its brushed-metal surface, It...
Nearby words for surface-integral
surface boundary layer
surface effect ship
surface effect vehicle
surface friction drag
surface of light and shade
surface of projection
surface of revolution
surface-tension theory of narcosis
surfing the web