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mydriasis

/mɪˈdɹaɪ ə sɪs/noun

mydriasis is spelled M-Y-D-R-I-A-S-I-S: 9 letters. It appears about once in every 52 million words in written English, the 225,584th most frequent word form (wordfreq, 2021 data). As a noun, mydriasis means “The condition of having abnormally large and dilated pupils due to illness or narcotics, particularly stimulants such as methamphetamine, cocaine, etc” (English Wiktionary, September 2026). The plural of mydriasis is mydriases.

How many letters and syllables are in mydriasis?

Letters9: M-Y-D-R-I-A-S-I-S
In writingabout once in every 52 million words; the 225,584th most frequent word form
Wrong spellings searchednone 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 mydriasis?

Mydriasis appears about once in every 52 million words in written English, the 225,584th 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 mydriasis?

  • /mɪˈdɹaɪ ə sɪs/
  • /maɪ-/

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Forms of mydriasis

  • mydriases plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What does mydriasis mean?

The meanings the English Wiktionary records, quoted as written there (source below).

noun

  1. 1

    The condition of having abnormally large and dilated pupils due to illness or narcotics, particularly stimulants such as methamphetamine, cocaine, etc.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Mydriasis in Spanish, French, German and Portuguese

In the sense Translations:

LanguageWords
Frenchmydriase

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 mydriasis come from?

From Latin mydriasis, from Ancient Greek μυδρίᾱσις (mudríāsis, “undue enlargement of the pupil”), from μύδρος (múdros, “mass of red hot material in a forge”), possibly because the pupil is particularly bright or sparkling when dilated, or because of the red eye effect when exposed to a flash of light.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

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