catadioptric
/ˌkæ.tə.daɪˈɔp.tɹɪk/adjective
catadioptric is spelled C-A-T-A-D-I-O-P-T-R-I-C. The wrong spelling people search most is catadioptic: about 10 Bing searches a month in the United States (September 2025 to August 2026), about 3 in 10 of all searches for the word. Catadioptric is an adjective meaning “Of or pertaining to optical systems that employ both reflective (catoptric) and refractive (dioptric) elements”.
How many letters and syllables are in catadioptric?
| Letters | 12: C-A-T-A-D-I-O-P-T-R-I-C |
|---|---|
| Syllables | 5 (from its pronunciation) |
| In writing | about once in every 69 million words; the 262,293rd most frequent word form |
| Wrong spellings searched | 1; the most searched, catadioptic, about 10 Bing searches a month (all of them) |
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); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026).
How do you spell catadioptric?
Catadioptric is spelled C-A-T-A-D-I-O-P-T-R-I-C. One wrong spelling is searched or written often enough to measure; together they are about 3 in 10 of the searches for catadioptric in either form.
Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.
How common is catadioptric?
Catadioptric appears about once in every 69 million words in written English, the 262,293rd 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).
How do you pronounce catadioptric?
- UK /ˌkæt.ə.daɪˈɑp.tɹɪk/
- US /ˌkæ.tə.daɪˈɔp.tɹɪk/
- US /ˌkæ.tə.daɪˈɔp.tɹək/
Catadioptric has 5 syllables (counted from the pronunciation).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does catadioptric mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Of or pertaining to optical systems that employ both reflective (catoptric) and refractive (dioptric) elements.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does catadioptric come from?
Blend of catoptric + dioptric.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).