porphyrin
/ˈpɔɹfəɹɪn/noun
porphyrin is spelled P-O-R-P-H-Y-R-I-N. The wrong spelling people search most is prophyrin: about 10 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 33 of all searches for the word. Porphyrin is a noun meaning “Any of a class of heterocyclic compounds containing pyrrole rings arranged in a square or other similar…”. The plural of porphyrin is porphyrins.
How many letters and syllables are in porphyrin?
| Letters | 9: P-O-R-P-H-Y-R-I-N |
|---|---|
| In writing | about once in every 13 million words; the 106,501st most frequent word form |
| Wrong spellings searched | 1; the most searched, prophyrin, about 10 Bing searches a month (all of them) |
| Rhymes with |
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); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026); rhymes and same-letter words are computed by PlainSpell from its own word list.
How do you spell porphyrin?
Porphyrin is spelled P-O-R-P-H-Y-R-I-N. One wrong spelling is searched or written often enough to measure; together they are about 1 in 33 of the searches for porphyrin in either form.
Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.
How common is porphyrin?
Porphyrin appears about once in every 13 million words in written English, the 106,501st 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).
How do you pronounce porphyrin?
- UK /ˈpɔːfɪɹɪn/
- US /ˈpɔɹfəɹɪn/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-porphyrin.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with porphyrin?
One word on PlainSpell end in the same sounds as porphyrin from its last stressed vowel (/ɔɹfəɹɪn/):
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of porphyrin
- porphyrins plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does porphyrin mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Any of a class of heterocyclic compounds containing pyrrole rings arranged in a square or other similar shape; they are important in biochemistry in a form with a metal atom in the central cavity (hemoglobin with iron, chlorophyll with magnesium, etc.).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Porphyrin in Spanish, French, German and Portuguese
In the sense heterocyclic compound:
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 porphyrin come from?
From German Porphyrin, shortened from Hämatoporphyrin (“haematoporphyrin”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).