paramètrevspérimètreWhich spelling fits?

Which to use

“paramètre” and “périmètre” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#15,957
“paramètre” frequency rank
#6,990
“périmètre” frequency rank
22947
confusion score

Side-by-Side Comparison

Feature paramètre périmètre
Definition Constante qui fixe la position d’une figure géométrique. Il a différentes acceptions selon les courbes auxquelles on l’applique. Contour d’une figure plane.

Where the eye mixes paramètre and périmètre

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. paramètre and périmètre follow the identical consonant-vowel pattern (CVCVCVCCV). Same shape at a glance is often the real trap, independent of shared letters.

9 ch
paramètre
9 ch
périmètre

Look-alike desk: paramètre vs périmètre

A purely visual mix-up. paramètre (\pa.ʁa.mɛtʁ\) and périmètre (\pe.ʁi.mɛtʁ\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 22947, derived from the frequency rank of both members and their visual similarity.

paramètre is recorded at frequency rank #15,957, classified as anoun, pronounced \pa.ʁa.mɛtʁ\. périmètre is at rank #6,990, tagged as anoun, pronounced \pe.ʁi.mɛtʁ\.

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 22947, this pair ranks #355,222 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of paramètre vs périmètre

Shared letters: emprtè. Private to "paramètre": a. Private to "périmètre": ié.

"paramètre" · 9 letters · shape CVCVCVCCV  ·  "périmètre" · 9 letters · shape CVCVCVCCV

Frequently Asked Questions

Do "paramètre" and "périmètre" mean the same thing in a sentence?
No. They are said differently (\pa.ʁa.mɛtʁ\ versus \pe.ʁi.mɛtʁ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "paramètre" or "périmètre"?
"périmètre" is the more common of the two: it sits at frequency rank #6,990 in our French list, against #15,957 for "paramètre". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "paramètre" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "périmètre" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #355,222 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "paramètre" and "périmètre" also get mixed up with nearby pairs, the highest-scored neighbour is "périmée vs périmètre". Nearby pair

Confusion rank #355,222 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list