diopter
di·op·ter
nounDefinition of DIOPTER
: a unit of measurement of the refractive power of a lens equal to the reciprocal of the focal length in meters
Variants of DIOPTER
di·op·ter or chiefly British di·op·tre \dī-ˈäp-tər, ˈdī-ˌäp-\
Test Your Vocabulary
Take Our 10-Question Quiz
|
|
|
Name That ThingTest Your Knowledge » |
|
True or False?A quick quiz about stuff worth knowing Take It Now » |
|
|
|
Join Us on FB & TwitterGet the Word of the Day and More Facebook | Twitter |
-
Learning English?
We can help.
Visit our free site designed especially for learners and teachers of English LearnersDictionary.com »
-
Bookstore: Digital and Print
Merriam-Webster references for Mobile, Kindle, print, and more. See all » -
Other Merriam-Webster Dictionaries
