color zone

noun

Definition of color zone

in some theories of vision

: one of the three concentric areas of the retina as distinguished on the basis of their color sense, the outer zone giving practically only the grays, the intermediate zone adding yellow and blue, and the central zone adding red and green so that only the central zone is sensitive to all colors

Comments on color zone

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

WORD OF THE DAY

writhe

to move or proceed with twists and turns

Test Your Vocabulary

Words from Greek and Latin Quiz

Which of the following months comes from a Latin word for “ten”?

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ

SCRABBLE® Sprint

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

TAKE THE QUIZ