Which to use
“Petr” is a name and “petri” is a noun - they look or sound alike but fill different roles in a sentence.
- #32,535
- “Petr” frequency rank
- #29,786
- “petri” frequency rank
- 62321
- confusion score
Side-by-Side Comparison
| Feature | Petr | petri |
|---|---|---|
| Definition | Alternative form of Pyotr. | Ellipsis of petri dish. |
Letter map: Petr vs petri
Shared letters muted; letters that set Petr and petri apart highlighted. Shared run: 4. Petr runs 4 letters (CVCC) against petri's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.
Part-of-speech tell for Petr / petri
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Petr is aname and petrianoun. On the page they differ by 1 extra letter(s) - “Petr” sits inside “petri”. Our composite confusion score for this pair is 62321, derived from the frequency rank of both members and their visual similarity.
Petr is recorded at frequency rank #32,535, classified as aname. petri is at rank #29,786, tagged as anoun, pronounced /ˈpiːtɹi/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 62321, this pair ranks #89,170 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of Petr vs petri
Shared letters: eprt. Private to "Petr": -. Private to "petri": i.
"Petr" · 4 letters · shape CVCC · "petri" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "Petr" and "petri" mean the same thing in a sentence?
In ordinary English text, does "Petr" or "petri" show up more?
After this comparison
Pair "Petr" vs "petri" is on the table, pick a follow-up below.
- Full dictionary entry for "Petr" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "petri" - compare definitions side by side with the headword page. Word entry
- This pair ranks #89,170 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "Petr" and "petri" also get mixed up with nearby pairs, the highest-scored neighbour is "pecs vs Petr". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #89,170 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.