Skip to content
Word ChallengeWord Challenge

Diopter

7 lettersnounrare

Updated June 2026

Definition

A unit measuring the refractive power of a lens, equal to the reciprocal of the focal length in metres, used in optometry.

β€œHis left lens was prescribed at minus two diopter to correct his short sight.”

Pronunciation

Syllables

diΒ·opΒ·ter

Related Words

Synonyms

Word Game Tips

🟩

Wordle

Contains OPT in the middle - unusual PT cluster with two vowels O and E

πŸ”€

Scrabble

P is worth 3 points - 7-letter bingo potential if you hold DIOTER on your rack

Words Related to Diopter

Anagrams of Diopter

Words that use exactly the same letters as β€œdiopter”.

Words you can make from Diopter

Shorter words formed from the letters in β€œdiopter”.

Add a letter to make a longer word

8-letter words you can spell by adding one letter to β€œdiopter”.

Explore Similar Words

Try These Tools

Dictionary References

Look up diopter in an authoritative dictionary for full definitions, pronunciation, and etymology.

Word Challenge

Ready to test your word skills?

Download Word Challenge for unlimited word puzzles, a fresh Daily Challenge, and head-to-head multiplayer. Guess the hidden word in six tries or fewer!

Download Free