MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
The most complete online medical dictionary: 16,436 terms covering anatomy, physiology, pathologies, diagnostic exams, pharmacology and every clinical specialty.
Designed for 3 kinds of users:
- Patients and family who want to understand a diagnosis, a medical report or instructions from a doctor.
- Students of medicine, nursing, physiotherapy and the health professions, dealing with technical terminology.
- Doctors, pharmacists and healthcare workers who need a quick and reliable reference.
Definitions are written in clear, accessible language while keeping the rigor required for professional use. Each term has a dedicated URL, instant autocomplete search, and can be shared on WhatsApp, Facebook, X and via email with one click.
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Disclaimer: the content is for informational and educational purposes only and does not replace medical advice. If you have doubts about your health, always consult a qualified professional. In case of emergency call your local emergency number (911 in the US, 112 in the EU).
Recommended Dietary Allowance
The RDA, the estimated amount of a nutrient (or calories) per day considered necessary for the maintenance of good health by the Food and Nutrition Board of the National Research Council/ National Academy of Sciences. The RDA is updated…
Read the definitionRandom terms
Show more- Borborygmus Bowel sounds, the gurgling, rumbling, or growling noise from the abdomen caused by the muscular contractions…
- Internal genitalia, female See: Female internal genitalia
- Punch biopsy A biopsy performed using a punch, an instrument for cutting and removing a disk of tissue. For example, a…
- Toddler A young child who is learning to walk with short unsteady steps. The word toddle is of unknown origin
- Heparin-induced thrombocytopenia Low blood platelet count as a result of the medication heparin. Heparin is used to treat and prevent abnormal…
- Immunization, varicella A live attenuated (weakened) viral vaccine that is recommended for people traveling to or living in tropical…
- Fluctuating rib One of the last two ribs. A rib is said to be 'fluctuating' if it does not attach to the sternum (the breast…
- Refractory Not yielding (at least not yielding readily) to treatment
- Parenteral Entering the body not by the alimentary tract but rather by another means (such as the subcutaneous, the…
- Slow-wave sleep Sleep: Stage 3 and 4 non-rapid eye movement (non-REM) sleep. Slow-wave sleep is characterized by brain wave…
- Isoform A protein that has the same function as another protein but which is encoded by a different gene and may have…
- Tuberculosis, antibiotic-resistant A variant of tuberculosis (TB) that is not affected by one or more of the antibiotics normally used to treat…