substratum
sub·stra·tum/səbˈstrɑ.təm/noun
substratum is spelled S-U-B-S-T-R-A-T-U-M: 10 letters and 3 syllables (sub·stra·tum). It appears about once in every 6 million words in written English, the 72,332nd most frequent word form (wordfreq, 2021 data). As a noun, substratum means “A layer that lies underneath another” (English Wiktionary, September 2026). The plural of substratum is substrata.
How many letters and syllables are in substratum?
| Letters | 10: S-U-B-S-T-R-A-T-U-M |
|---|---|
| Syllables | 3: sub·stra·tum |
| In writing | about once in every 6 million words; the 72,332nd 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 substratum?
Substratum appears about once in every 6 million words in written English, the 72,332nd 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 substratum?
- /səbˈstrɑ.təm/
- /səbˈstreɪ̯.təm/
Substratum has 3 syllables, split sub·stra·tum in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-substratum.wav, Wikimedia Commons (author and licence on each file's page).
Forms of substratum
- substrata plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does substratum mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A layer that lies underneath another.
- 2
The underlying cause or basis of something.
- 3
A substrate.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Substratum in Spanish, French, German and Portuguese
In the sense a layer that lies underneath another:
| Language | Words |
|---|---|
| Portuguese | substrato |
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 substratum come from?
Learned borrowing from New Latin substrātum, nominalisation of the neuter of Latin substrātus, perfect passive participle of substernō. By surface analysis, sub- + stratum.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).