MEDical ABBREViations - Always Current
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Introduction / Warning

The starting point for this website was the book authored by Dr. Neil M Davis titled. Medical Abbreviations: 55,000 Conveniences at the Expense of Communication and Safety, 16th ed., published, December 2021. Over 30 new entries are added each week so that as of October 2019, has been updated with 23,395 new entries since the book was last published. As of July 2020, medabbrev. com listed over 57,100 possible meanings of acronyms, symbols, abbreviations, and slang terms. This constantly growing list is being compiled to assist individuals in understanding and transcribing medical, nursing, pharmaceutical, and other health-related communications and documents. Your suggestions and comments are welcomed at


Abbreviations are a convenience, a time saver, a space saver, a way of fitting a word or phrase into a restricted space on a form or computer,and a way of avoiding the possibility of misspelling words. However, a price can be paid for their use. Abbreviations are sometimes not understood, misread, or are interpreted incorrectly. Their use lengthens the time needed to train individuals in the health fields, wastes the time of healthcare workers in tracking down their meaning, at times delays the patient's care, and occasionally results in patient harm.
The publication of this list of abbreviations is not an endorsement of their legitimacy. It is not a guarantee that the intended meaning has been correctly captured, or an indication that they are in common use. The person who uses an abbreviation must take responsibility for making sure that it is properly interpreted. When an uncommon or ambiguous abbreviation is used and it may not be understood correctly, it should be defined by the writer. Where uncertainty exists, the one who wrote the abbreviation must be contacted for clarification.

(The continuation of this Introduction is available on the subscriber version where it presents information about the origin of abbreviations, the danger associated with their use, and an explanation of how the abbreviations are listed.)

As part of our mission to be current and comprehensive, this past week has added 113 new entries- the site now contains 67,901 entries.