oestrus
/ˈiːstɹəs/noun
oestrus is spelled O-E-S-T-R-U-S: 7 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, oestrus means “A biting fly of the genus Oestrus; a botfly” (English Wiktionary, September 2026). The plural of oestrus is oestruses or oestri.
How many letters and syllables are in oestrus?
| Letters | 7: O-E-S-T-R-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 |
| 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 oestrus?
Oestrus 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 oestrus?
- /ˈiːstɹəs/
- /ˈɛstɹəs/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-uk-oestrus.ogg, Wikimedia Commons (author and licence on each file's page).
What rhymes with oestrus?
No other word on PlainSpell ends in the same sounds as oestrus.
Spelled with the same letters in another order: estrous.
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 oestrus
- oestruses plural
- oestri plural
- estrus US
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does oestrus mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A biting fly of the genus Oestrus; a botfly.
- 2
A bite or sting.
- 3
archaicA passion or frenzy.
- 4
A female animal's readiness to mate.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Oestrus in Spanish, French, German and Portuguese
In the sense a female animal's readiness to mate:
| Language | Words |
|---|---|
| French | œstrus, chaleur |
| German | Brunst, Hitze |
| Portuguese | estro, cio |
| Spanish | estro, celo, brama, berrea, cachondez |
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 oestrus come from?
Borrowed from Latin oestrus (“gadfly, sting, frenzy”), from Ancient Greek οἶστρος (oîstros), from Proto-Indo-European *h₁eys-, used to form words denoting passion; see also Latin īra (“anger”), Lithuanian aistra (“violent passion”), Avestan 𐬀𐬈𐬯𐬨𐬀 (aesma, “anger”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).