residuum
re·sid·u·um/ɹɛˈzɪ.dju.ʌm/noun
residuum is spelled R-E-S-I-D-U-U-M: 8 letters and 4 syllables (re·sid·u·um). It appears about once in every 35 million words in written English, the 182,517th most frequent word form (wordfreq, 2021 data). As a noun, residuum means “The residue, remainder or rest of something” (English Wiktionary, September 2026). The plural of residuum is residuums or residua.
How many letters and syllables are in residuum?
| Letters | 8: R-E-S-I-D-U-U-M |
|---|---|
| Syllables | 4: re·sid·u·um |
| In writing | about once in every 35 million words; the 182,517th 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 residuum?
Residuum appears about once in every 35 million words in written English, the 182,517th 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 residuum?
- /ɹɛˈzɪ.dju.ʌm/
- /ɹɪ-/
- /-ˈzɪ.dʒu-/
Residuum has 4 syllables, split re·sid·u·um in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-residuum.wav, Wikimedia Commons (author and licence on each file's page).
Forms of residuum
- residuums plural
- residua plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does residuum mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The residue, remainder or rest of something.
- 2
The solid material remaining after the liquid in which it was dissolved has been evaporated; a residue.
- 3
A binary function from [0,1] × [0,1] to [0,1] which is defined in terms of the t-norm as follows: x→y= sup z|z*x⩽y, where * denotes the t-norm function and sup denotes the supremum.
The residuum of the minimum t-norm is a function #92;rightarrow such that x#92;rightarrowy#61;#92;begin#123;cases#125;y,amp;#92;text#123;if#125;xgt;y#92;#92;1,amp;#92;text#123;if#125;x#92;leqslanty.#92;end#123;cases#125;
- 4
The residue of an estate.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does residuum come from?
From Latin residuum. Doublet of residue.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).