duochrome
noun, adjective, adverb
duochrome is spelled D-U-O-C-H-R-O-M-E: 9 letters. It appears about once in every 49 million words in written English, the 217,360th most frequent word form (wordfreq, 2021 data). As a noun, duochrome means “The duochrome test, a test used by opticians to refine the correction of refractive error, in which the subject is asked to compare images presented…” (English Wiktionary, September 2026). The plural of duochrome is duochromes.
How many letters and syllables are in duochrome?
| Letters | 9: D-U-O-C-H-R-O-M-E |
|---|---|
| In writing | about once in every 49 million words; the 217,360th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is duochrome?
Duochrome appears about once in every 49 million words in written English, the 217,360th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Forms of duochrome
- duochromes plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does duochrome mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The duochrome test, a test used by opticians to refine the correction of refractive error, in which the subject is asked to compare images presented with red and green backgrounds.
- 2
An image composed of varying shades (grayscale) of two colors.
- 3
A piece of pottery decorated in two colors.
- 4
A color scheme consisting of only two hues.
- 5
Fabric that shifts between two colors, depending on the angle of light, also, by extension, something made with such fabric.
- 6
A fluorochrome that shows up in either of two colors, depending on the type of biological material it stains.
adjective
- 1
Pertaining to the red and green colors of the duochrome test.
- 2
Composed of two colors.
adverb
- 1
In two colors.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does duochrome come from?
From duo- + chrome.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).