photocatalysis
noun
photocatalysis is spelled P-H-O-T-O-C-A-T-A-L-Y-S-I-S: 14 letters. It appears about once in every 45 million words in written English, the 206,808th most frequent word form (wordfreq, 2021 data). As a noun, photocatalysis means “catalysis by a photocatalyst” (English Wiktionary, September 2026).
How many letters and syllables are in photocatalysis?
| Letters | 14: P-H-O-T-O-C-A-T-A-L-Y-S-I-S |
|---|---|
| In writing | about once in every 45 million words; the 206,808th 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 photocatalysis?
Photocatalysis appears about once in every 45 million words in written English, the 206,808th 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).
What does photocatalysis mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
catalysis by a photocatalyst
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Photocatalysis in Spanish, French, German and Portuguese
In the sense Chemistry: Catalysis by a photocatalyst:
| Language | Words |
|---|---|
| French | photocatalyse |
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 photocatalysis come from?
From photo- + catalysis.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).