allantoin
noun
allantoin is a noun meaning “A diureide of glyoxylic acid, used in various pharmaceutical and cosmetic products; or a derivative of this compound” (English Wiktionary, September 2026). It is spelled A-L-L-A-N-T-O-I-N, and it appears about once in every 32 million words in written English (wordfreq, 2021 data). The plural of allantoin is allantoins.
What does allantoin mean?
noun
- 1
A diureide of glyoxylic acid, used in various pharmaceutical and cosmetic products; or a derivative of this compound
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of allantoin
- allantoins plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is allantoin?
Allantoin appears about once in every 32 million words in written English, the 171,907th 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).
Allantoin in Spanish, French, German and Portuguese
In the sense a diureide of glyoxylic acid:
| Language | Words |
|---|---|
| French | allantoïne |
| Portuguese | alantoína |
| Spanish | alantoína |
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 allantoin come from?
From allanto- + -in; this substance concentrates in the allantois during development in most mammals.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).