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).
Adverse effect
A harmful or abnormal result. An adverse effect may be caused by administration of a medication or by exposure to a chemical and be indicated by an untoward result such as by illness or death
Read the definitionRandom terms
Show more- Systole, extra See: Extrasystole
- Numb Numb, or numbness is a loss of the sensation of feeling in an area of the body. Numbness results from damage…
- Arteries, coronary The vessels that supply the heart muscle with blood rich in oxygen. They are called the coronary arteries…
- Cryoglobulinemia The presence in blood of abnormal proteins called cryoglobulins that, by definition, have the unusual…
- Laparoscopic assisted vaginal hysterectomy A procedure using laparoscopic techniques to remove the uterus (womb) and/or tubes and ovaries through the…
- Carbon monoxide poisoning Poisoning with carbon monoxide, a tasteless odorless gas that is a byproduct of combustion. Carbon monoxide…
- Weighing, underwater See: Underwater weighing
- Stromal Pertaining to the stroma of an organ. See: Stroma
- Schedules, Gesell Developmental A measure of child development devised by the American child psychologist and pediatrician Arnold Gesell…
- Rhinitis, allergic, seasonal Allergic rhinitis (hayfever) which occurs during a specific season
- Brown fat Brown adipose tissue, a rapid source of energy for infants in whom it forms about 5% of their body weight. It…
- Intestinal obstruction Blockage of the intestine by infolding (intussusception), malformation, tumor, digestive problems, a foreign…