Word of the Day
Apps by Dictionary
8 Wintry Words to Defrost Your Vocabulary
an ideal in a ring with a multiplicative identity, having the property that when the product of two elements of the ring results in an element of the ideal, at least one of the elements is an element of the ideal.
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Discover our greatest slideshows
8 Words for Celebration
The 12 Days of Christmas
Mangers and Myrrh: The Language of...
Light Up Your Language for the...
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
As for America, it is the ideal fruit of all your youthful hopes and reforms. Everybody is fairly...
Henry Brooks Adams
José's my first non-rat romance. Not that he's my idea of the absolute finito. He's too prim and...
... the day will come when man will recognize woman as his peer, not only at the fireside but in the...
Susan B. Anthony
Nearby words for prime-ideal
prime interest rate
prime number theorem
prime of life
prime the pump
primitive costal arch