miosis
/maɪˈoʊsɪs/noun
miosis is spelled M-I-O-S-I-S: 6 letters. It appears about once in every 46 million words in written English, the 209,386th most frequent word form (wordfreq, 2021 data). As a noun, miosis means “Contraction of the pupil of the eye” (English Wiktionary, September 2026). The plural of miosis is mioses.
How many letters and syllables are in miosis?
| Letters | 6: M-I-O-S-I-S |
|---|---|
| In writing | about once in every 46 million words; the 209,386th most frequent word form |
| Wrong spellings searched | none measured in search |
| Sounds like |
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 miosis?
Miosis appears about once in every 46 million words in written English, the 209,386th 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 miosis?
- /maɪˈoʊsɪs/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Words people confuse with miosis
Sounds like: meiosis (Wiktionary's homophone list; some hold only in some accents).
Sources: English Wiktionary (homophones, alternative spellings).
Forms of miosis
- mioses plural
- myosis
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does miosis mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Contraction of the pupil of the eye.
Horner's syndrome consists of typically unilateral miosis and eyelid ptosis, and absent forehead sweating.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Miosis in Spanish, French, German and Portuguese
In the sense contraction of the pupil of the eye:
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does miosis come from?
From Ancient Greek μύω (múō, “to close the eyes”) + English -osis.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).