Skip to main content
v2026.1714 entries · CC-BY 4.0
Dictionary termTrack AStablev2026.2

Letter to editor

A short scholarly communication submitted to a journal in response to a previously-published article in that journal, raising questions, corrections, alternative interpretations, or additional evidence, typically published with a reply from the original authors.

ByCASRAI Editorial Board
· Last updated 21 May 2026

Examples

Worked examples

  • Is an instance

    A 400-word letter in JAMA pointing out a statistical inconsistency in a recent original article, with an authors' reply

Counter-examples

Looks similar, but isn't

  • Not an instance

    An informal email to a journal editor is not a published letter to the editor

Editorial commentary

Letters to the editor are peer-reviewed (often by the original article’s reviewers) and are citable. They are the canonical post-publication-peer-review mechanism in traditional journal publishing. Length limits are tight (typically under 500 words). Distinct from a research letter (which presents new research data).

References

  • ICMJE Recommendations on Correspondence (2024)
  • NEJM Letter to the Editor submission guidelines

Also known as

Letter to the editor · Correspondence (letter)

Machine-readable encodings

Use in your systems

JATS XML <role> element
xml
<role vocab="credit"
      vocab-identifier="https://casrai.org/dictionary/"
      vocab-term="Letter to editor"
      vocab-term-identifier="https://casrai.org/dictionary/term/letter-to-editor" />
Schema.org DefinedTerm (JSON-LD)
json
{
  "@context": "https://schema.org",
  "@type": "DefinedTerm",
  "name": "Letter to editor",
  "identifier": "https://casrai.org/dictionary/term/letter-to-editor",
  "description": "A short scholarly communication submitted to a journal in response to a previously-published article in that journal, raising questions, corrections, alternative interpretations, or additional evidence, typically published with a reply from the original authors.",
  "inDefinedTermSet": "https://casrai.org/dictionary/domain/research-outputs-expanded/",
  "url": "https://casrai.org/dictionary/term/letter-to-editor",
  "sameAs": [
    "Letter to the editor",
    "Correspondence (letter)"
  ],
  "license": "https://creativecommons.org/licenses/by/4.0/"
}

Adopted by research universities worldwide

University of Cambridge logoColumbia University logoUniversity of Edinburgh logoHarvard University logoMassachusetts Institute of Technology logoUniversity of Oxford logoPrinceton University logoStanford School of Medicine logoUniversity College London logoUniversity of Cambridge logoColumbia University logoUniversity of Edinburgh logoHarvard University logoMassachusetts Institute of Technology logoUniversity of Oxford logoPrinceton University logoStanford School of Medicine logoUniversity College London logo
  • University of Cambridge logo
  • Columbia University logo
  • University of Edinburgh logo
  • Harvard University logo
  • Massachusetts Institute of Technology logo
  • University of Oxford logo
  • Princeton University logo
  • Stanford School of Medicine logo
  • University College London logo

View CASRAI adoption →