Puzzles & Games
Word of the Day
Apps by Dictionary
Is irregardless a word?
an optical glass of low dispersion and relatively low refractive index. It is used in the construction of lenses
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Discover our greatest slideshows
Double your fun with these...
Penny-farthings to Panniers: 7...
Speak with Savoir-faire: 10 French...
A Wordy Look at Inside Out's 5...
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
Word Value for
Words With Friends
Nearby words for optical crown
optical carrier 12
optical carrier 3
optical carrier 48
optical carrier n
optical character re cognition
optical character re cognition's
optical character re cognitions
optical character re cognitions'
optical character re-cognition
optical character re-cognition's
optical character re-cognitions
optical character re-cognitions'
optical character reader
optical character recognition
optical character recognition's
optical character recognitions
optical character recognitions'
optical double star
optical double star's
optical double stars
optical double stars'
optical mark reader