MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Syncope, defecation
The temporary loss of consciousness upon defecating (having a bowel movement). Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood…
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Show more- NIAAA (Nat'l Inst. on Alcoh. Abuse and Alcoholism) Sm: The National Institute on Alcohol Abuse and Alcoholism is one of the National Institutes of Health (NIH)…
- Torus fracture A fracture in which one side of the bone bends, but does not actually break. Torus fractures normally heal on…
- Tension pneumothorax The pressure of the blood within an artery, the arterial pressure. Also called the intra-arterial pressure…
- Rhinitis, allergic, perennial Allergic rhinitis (hayfever) that occurs throughout the year
- Transplant, lung The first lung transplant was done by the American surgeon James Hardy (1918-) in 1964.
- Homologous The relationship between two chromosomes that are paired and so are homologs of each other.
- Hematochezia Bright red blood in the stool, usually from the lower gastrointestinal tract -- the colon or rectum -- or…
- Cyst, thyrolingual See: Thyroglossal cyst
- Five-day fever Fever: Also called trench fever, this is a disease borne by body lice that was first recognized in the…
- Iron supplementation, infant Iron is included in most infant formulas. Therefore, there is no evidence that iron supplementation is…
- Physician, family A physician who is educated and trained in family practice. 'Family physicians possess unique attitudes…
- Reaction kinetics Kinetics (with an 's' at the end) refers to the rate of change in a biochemical (or other) reaction, the…