monotreme
mo·no·treme/ˈmɒnətɹiːm/noun, adjective
monotreme is spelled M-O-N-O-T-R-E-M-E: 9 letters and 3 syllables (mo·no·treme). It appears about once in every 74 million words in written English, the 272,462nd most frequent word form (wordfreq, 2021 data). As a noun, monotreme means “Any of the order Monotremata of mammals that lay eggs and have single orifices for urogenital and digestive functions (cloaca); an echidna, platypus…” (English Wiktionary, September 2026). The plural of monotreme is monotremes.
How many letters and syllables are in monotreme?
| Letters | 9: M-O-N-O-T-R-E-M-E |
|---|---|
| Syllables | 3: mo·no·treme |
| In writing | about once in every 74 million words; the 272,462nd most frequent word form |
| Wrong spellings searched | none measured in search |
| Same letters |
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); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is monotreme?
Monotreme appears about once in every 74 million words in written English, the 272,462nd 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 monotreme?
- /ˈmɒnətɹiːm/
Monotreme has 3 syllables, split mo·no·treme in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-monotreme.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with monotreme?
No other word on PlainSpell ends in the same sounds as monotreme.
Spelled with the same letters in another order: metronome.
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of monotreme
- monotremes plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does monotreme mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Any of the order Monotremata of mammals that lay eggs and have single orifices for urogenital and digestive functions (cloaca); an echidna, platypus or one of their extinct relatives.
adjective
- 1
Having a single trema, or aperture.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Monotreme in Spanish, French, German and Portuguese
In the sense egg-laying mammal:
| Language | Words |
|---|---|
| French | monotrème |
| German | Kloakentier |
| Portuguese | monotremo, monotremado, monotrémato |
| Spanish | monotrema |
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 monotreme come from?
From mono- (“one”) + -treme (“hole”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).