Which to use
“PCR” and “perf” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #39,452
- “PCR” frequency rank
- #24,321
- “perf” frequency rank
- 63773
- confusion score
Side-by-Side Comparison
| Feature | PCR | perf |
|---|---|---|
| Definition | Amplification en chaîne par polymérase, méthode qui permet de créer un grand nombre de copies d’une séquence d’ADN ou d’ARN. | Performance. |
Where the eye mixes PCR and perf
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. PCR runs 3 letters (CCC) against perf's 4 (CVCC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between PCR and perf
A purely visual mix-up. PCR (\pe.se.ɛʁ\) and perf (\pɛʁf\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 63773, derived from the frequency rank of both members and their visual similarity.
PCR is recorded at frequency rank #39,452, classified as anoun, pronounced \pe.se.ɛʁ\. perf is at rank #24,321, tagged as anoun, pronounced \pɛʁf\.
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 63773, this pair ranks #80,288 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of PCR vs perf
Shared letters: pr. Private to "PCR": c. Private to "perf": ef.
"PCR" · 3 letters · shape CCC · "perf" · 4 letters · shape CVCC
Known mistypes of this pair
- perf ← eprf · pefr · perff · perrf · pperf · pref
Frequently Asked Questions
Do "PCR" and "perf" mean the same thing in a sentence?
Frequency check: "PCR" vs "perf" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "PCR" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "perf" - compare definitions side by side with the headword page. Word entry
- This pair ranks #80,288 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "PCR" and "perf" also get mixed up with nearby pairs, the highest-scored neighbour is "PCR vs pio". 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 #80,288 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.