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).
Anencephaly
A neural tube defect (NTD) that occurs when the cephalic (head) end of the neural tube fails to close, usually between the 23rd and 26th days of pregnancy, resulting in the absence of a major portion of the brain, skull, and scalp. Infants…
Read the definitionRandom terms
Show more- Niacin Niacin: Nicotinic acid, one of the B-complex B vitamins. Deficiency of niacin in the diet results in the…
- Goitrogenic foods Goitrogenic are foods that can affect thyroid function by inhibiting synthesis of thyroid hormones, resulting…
- Cyclooxygenase-1 inhibitor See: Cox-1 inhibitor
- Hyperactivity A higher than normal level of activity. An organ can be described as hyperactive if it is more active than…
- Cortex The outer portion of an organ. The outer portion of the adrenal gland is called the adrenal cortex; the outer…
- Super- Prefix meaning meaning above, more than normal, or excessive. As in superaspirin, superbug, superjacent…
- Fear of travel An irrational and unreasonable fear of travel is called agoraphobia. Agoraphobia is a very complex phobia. It…
- Retromingent Urinating backwards. Also an animal such as a raccoon that urinates backwards. As in: 'You have revealed…
- Test, stress echocardiography A supplement to the routine exercise cardiac stress test. During stress echocardiography, the sound waves of…
- Spiral fracture A fracture, sometimes called a torsion fracture, in which a bone has been twisted apart. NTER>
- Reduviid bug A winged insect. Reduviids include kissing bugs which transmit Chagas disease. See: Chagas disease
- Saliva A watery secretion in the mouth produced by the salivary glands that aids in the digestion of food. Saliva…