The NLM is an English-centric system, but it handles non-English journals by abbreviating the transliterated title. For example:
In 1956, the National Library of Medicine (NLM) was established by law, transferring the collections and responsibilities of the Armed Forces Medical Library. The NLM inherited the Index Medicus and, crucially, its abbreviation system.
Today, the NLM is the world’s largest biomedical library. As the publisher of Index Medicus and now the creator of PubMed and MEDLINE, the NLM holds the ultimate authority over journal title abbreviations in the life sciences. The NLM is an English-centric system, but it
When the NLM transitioned to digital databases in the 1960s and 1970s (developing MEDLINE, or "Medical Literature Analysis and Retrieval System Online"), they needed a standardized, machine-readable list. They created the NLM Catalog, which includes over 140,000 journals, and each one is assigned a unique NLM Title Abbreviation.
If you are writing a manuscript for a medical journal, submitting a thesis, or building a database, the rule is simple: Use the NLM abbreviation. Not the abbreviation from ISO (International Organization for Standardization), not a guess, not the abbreviation from a competing publisher. The NLM is the gold standard. In 1956, the National Library of Medicine (NLM)
| Word type | Example | Abbreviation | |-----------|---------|---------------| | Single-word titles | Lancet | Lancet (no abbreviation) | | Common words omitted | Journal of | omit (or “J”) | | Significant words | American | Am | | | Medical | Med | | | Surgery | Surg | | Compound words | Neuropharmacology | Neuropharmacol |
For anyone venturing into the world of biomedical research, writing a scientific paper, or performing a literature search, a seemingly small but critical hurdle appears early on: journal title abbreviations. its abbreviation system. Today
You might see J Clin Invest, N Engl J Med, or Ann Intern Med in a reference list. But what do they stand for? And more importantly, where does this standardized system come from?
The answer lies in a historic and authoritative source: Index Medicus, produced by the U.S. National Library of Medicine (NLM). The abbreviations derived from this system are the gold standard for citing biomedical journals.