day blindness


Definition of day blindness

: hemeralopia

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of day blindness

circa 1587, in the meaning defined above

Keep scrolling for more

Learn More about day blindness

Time Traveler for day blindness

Time Traveler

The first known use of day blindness was circa 1587

See more words from the same year

Statistics for day blindness

Cite this Entry

“Day blindness.” Dictionary, Merriam-Webster, Accessed 4 Jul. 2020.

Comments on day blindness

What made you want to look up day blindness? Please tell us where you read or heard it (including the quote, if possible).


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

A More Exception(al) Quiz

  • hot dog  hot dog  hot dog  hot dog cat
  • Which of the following words is not a synonym for ‘a young person’?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!