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).
Alarm clock headache
A relatively rare form of headache in which the patient is awakened from sleep at the same time every night, usually between 1 and 3 o'clock, with intense dull or throbbing pain over the whole head. Each episode may last up to 1 hour and…
Read the definitionRandom terms
Show more- CpG island In molecular genetics, a short region of DNA rich in CpG sites, often located near the promoters of genes…
- Edema Edema: The swelling of soft tissues as a result of excess water accumulation. Edema is often more prominent…
- Selenocysteine An amino acid in which selenium takes the place of sulfur in the amino acid cysteine. Its formula is…
- Juxtaglomerular apparatus The prefix 'juxta-' comes from the Latin preposition meaning near, nearby, close. The juxtaglomerular…
- Epidural Outside the dura, the outermost, toughest, and most fibrous of the three membranes (meninges) covering the…
- Pilonidal sinus A sinus tract from which there may be chronic drainage of pus, due to an embedded tuft of hair, most often in…
- Hydrophobia Gross edema (swelling), usually with anemia, of the fetus. It can be due to Rh blood group incompatibility…
- Varicella rash Rash: Varicella (chickenpox) is characterized by a rash, often the first sign of the disease. The rash of…
- Fever, yellow See: Yellow fever
- Myocarditis, viral Inflammation of the muscles in the walls of the heart due to a viral infection. Among the offenders are dozen…
- Artery, pulmonary See: Pulmonary artery
- Hypovolemic shock See shock.