fMRIvsfraTell them apart

Which to use

“fMRI” and “fra” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#42,643
“fMRI” frequency rank
#25,765
“fra” frequency rank
68408
confusion score

Side-by-Side Comparison

Feature fMRI fra
Definition Initialism of functional magnetic resonance imaging. A title of a friar or monk: brother.

Letter map: fMRI vs fra

Shared letters muted; letters that set fMRI and fra apart highlighted. Shared run: 2. fMRI runs 4 letters (CCCV) against fra's 3 (CCV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
fMRI
3 ch
fra

Corpus notes: fMRI and fra

fMRI and fra are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 68408, derived from the frequency rank of both members and their visual similarity.

fMRI is recorded at frequency rank #42,643, classified as anoun. fra is at rank #25,765, tagged as anoun, pronounced /fɹɑː/.

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 68408, this pair ranks #59,003 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of fMRI vs fra

Shared letters: fr. Private to "fMRI": im. Private to "fra": a.

"fMRI" · 4 letters · shape CCCV  ·  "fra" · 3 letters · shape CCV

Known mistypes of this pair

  • fMRI ← ffmri · fmir · fmmri · fmrri · frmi · mfri

Frequently Asked Questions

Do "fMRI" and "fra" mean the same thing in a sentence?
No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
In ordinary English text, does "fMRI" or "fra" show up more?
"fra" is the more common of the two: it sits at frequency rank #25,765 in our English list, against #42,643 for "fMRI". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "fMRI" and "fra".

  • Full dictionary entry for "fMRI" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fra" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #59,003 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "fMRI" and "fra" also get mixed up with nearby pairs, the highest-scored neighbour is "Fars vs fMRI". 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 #59,003 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list