quadric
noun, adjective
quadric is a noun meaning “A surface or curve whose shape is defined in terms of a quadratic equation” (English Wiktionary, September 2026). It is spelled Q-U-A-D-R-I-C, and it appears about once in every 22 million words in written English (wordfreq, 2021 data). The plural of quadric is quadrics.
What does quadric mean?
noun
- 1
A surface or curve whose shape is defined in terms of a quadratic equation.
adjective
- 1
Of or relating to the second degree; quadratic.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce quadric?
- US
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Flame,_not_lame-quadric.wav, Wikimedia Commons (author and licence on each file's page).
Forms of quadric
- quadrics plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is quadric?
Quadric appears about once in every 22 million words in written English, the 143,405th 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).
Quadric in Spanish, French, German and Portuguese
In the sense surface whose shape is defined in terms of a quadratic equation:
| Language | Words |
|---|---|
| French | quadrique, surface quadrique, surface quadratique |
| Portuguese | quádrica, superfície quádrica |
| Spanish | cuádrica, superficie cuádrica |
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.