castrum
noun
castrum is spelled C-A-S-T-R-U-M: 7 letters. It appears about once in every 28 million words in written English, the 159,707th most frequent word form (wordfreq, 2021 data). As a noun, castrum means “Among the Ancient Romans, a building or plot of land used as a military defensive position” (English Wiktionary, September 2026). The plural of castrum is castra.
How many letters and syllables are in castrum?
| Letters | 7: C-A-S-T-R-U-M |
|---|---|
| In writing | about once in every 28 million words; the 159,707th most frequent word form |
| Wrong spellings searched | none 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 castrum?
Castrum appears about once in every 28 million words in written English, the 159,707th 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).
Forms of castrum
- castra plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does castrum mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Among the Ancient Romans, a building or plot of land used as a military defensive position.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does castrum come from?
Borrowed from Latin castrum. Doublet of Caister, Chester, ksar, and qasr.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).