sulfonamide
noun
sulfonamide is a noun meaning “Any amide of a sulfonic acid RS(=O)₂NR'₂” (English Wiktionary, September 2026). It is spelled S-U-L-F-O-N-A-M-I-D-E, and it appears about once in every 21 million words in written English (wordfreq, 2021 data). The plural of sulfonamide is sulfonamides.
What does sulfonamide mean?
noun
- 1
USAny amide of a sulfonic acid RS(=O)₂NR'₂
- 2
USAny of a group of antibiotics; a sulfa drug
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of sulfonamide
- sulfonamides plural
- sulphonamide
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is sulfonamide?
Sulfonamide appears about once in every 21 million words in written English, the 138,319th 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).
Sulfonamide in Spanish, French, German and Portuguese
In the sense any amide of a sulfonic acid:
| Language | Words |
|---|---|
| Spanish | sulfonamida |
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 sulfonamide come from?
From sulfon(ic acid) + amide.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).