triennium
/traɪˈɛniəm/noun
triennium is spelled T-R-I-E-N-N-I-U-M: 9 letters. It appears about once in every 56 million words in written English, the 234,209th most frequent word form (wordfreq, 2021 data). As a noun, triennium means “A period of three years” (English Wiktionary, September 2026). The plural of triennium is trienniums or triennia.
How many letters and syllables are in triennium?
| Letters | 9: T-R-I-E-N-N-I-U-M |
|---|---|
| In writing | about once in every 56 million words; the 234,209th most frequent word form |
| Wrong spellings searched | none measured in search |
| Rhymes with |
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 triennium?
Triennium appears about once in every 56 million words in written English, the 234,209th 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 triennium?
- US /traɪˈɛniəm/
- UK /trʌɪˈɛnɪəm/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What rhymes with triennium?
2 words on PlainSpell end in the same sounds as triennium from its last stressed vowel (/ɛniəm/):
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 triennium
- trienniums plural
- triennia plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does triennium mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A period of three years.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Triennium in Spanish, French, German and Portuguese
In the sense period of three years:
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 triennium come from?
From Latin triennium, from triennis (“3-year”) + -ium (suffix forming abstract nouns).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).