roundness
noun
roundness is spelled R-O-U-N-D-N-E-S-S: 9 letters. It appears about once in every 7 million words in written English, the 76,798th most frequent word form (wordfreq, 2021 data). As a noun, roundness means “The degree of accuracy to which a manufactured object intended to be round fulfills that requirement; it is measured by parameters such as TIR (total…” (English Wiktionary, September 2026). The plural of roundness is roundnesses.
How many letters and syllables are in roundness?
| Letters | 9: R-O-U-N-D-N-E-S-S |
|---|---|
| In writing | about once in every 7 million words; the 76,798th 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 roundness?
Roundness appears about once in every 7 million words in written English, the 76,798th 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 roundness
- roundnesses plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does roundness mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The degree of accuracy to which a manufactured object intended to be round fulfills that requirement; it is measured by parameters such as TIR (total indicator reading).
- 2
Synonym of rotundity.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does roundness come from?
From Middle English roundnesse, equivalent to round + -ness.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).