pileus
/ˈpɪliəs/noun
pileus is spelled P-I-L-E-U-S: 6 letters. It appears about once in every 26 million words in written English, the 154,067th most frequent word form (wordfreq, 2021 data). As a noun, pileus means “The cap of a mushroom” (English Wiktionary, September 2026). The plural of pileus is pilei.
How many letters and syllables are in pileus?
| Letters | 6: P-I-L-E-U-S |
|---|---|
| In writing | about once in every 26 million words; the 154,067th 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 pileus?
Pileus appears about once in every 26 million words in written English, the 154,067th 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 pileus?
- /ˈpɪliəs/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-pileus.wav, Wikimedia Commons (author and licence on each file's page).
Words people confuse with pileus
Sounds like: pileous (Wiktionary's homophone list; some hold only in some accents).
Sources: English Wiktionary (homophones, alternative spellings).
Forms of pileus
- pilei plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does pileus mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The cap of a mushroom.
- 2
The bell of a jellyfish.
- 3
A small thin cloud attached to a cumulus cloud.
- 4
A conical felt hat worn in Ancient Rome and Greece.
- 5
The top of the head of a bird, from the bill to the nape.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Pileus in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | pileus |
| German | Hut , Pileus |
| Portuguese | píleo |
| Spanish | píleo, sombrerillo, sombrerete |
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 pileus come from?
Borrowed from Latin pīleus, a form of pilleus (“a felt cap”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).