photocatalyst
noun
photocatalyst is spelled P-H-O-T-O-C-A-T-A-L-Y-S-T: 13 letters. It appears about once in every 40 million words in written English, the 194,306th most frequent word form (wordfreq, 2021 data). As a noun, photocatalyst means “A substance that absorbs light and, in doing so, catalyzes a reaction” (English Wiktionary, September 2026). The plural of photocatalyst is photocatalysts.
How many letters and syllables are in photocatalyst?
| Letters | 13: P-H-O-T-O-C-A-T-A-L-Y-S-T |
|---|---|
| In writing | about once in every 40 million words; the 194,306th 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 photocatalyst?
Photocatalyst appears about once in every 40 million words in written English, the 194,306th 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 photocatalyst
- photocatalysts plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does photocatalyst mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A substance that absorbs light and, in doing so, catalyzes a reaction.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Photocatalyst in Spanish, French, German and Portuguese
In the sense substance that absorbs light and catalyzes a reaction:
| Language | Words |
|---|---|
| French | photocatalyseur |
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 photocatalyst come from?
From photo- + catalyst.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).