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).
Cycle, cell
The sequence of events within the cell between mitotic (cell) divisions. The cell cycle is conventionally divided into phases: > >G0 (G zero, the G standing for gap) >G1, (G one, the first gap) >S (synthesis phase during which the DNA is…
Read the definitionRandom terms
Show more- Syndrome, Gilbert See Gilbert syndrome
- Tocophobia An abnormal and persistent fear of childbirth. A phobia is an unreasonable fear that can cause avoidance and…
- Quater in die (on prescription) Seen on a prescription, qid (or q.i.d.) means 4 times a day (from the Latin quater in die). The abbreviation…
- Pinna The ear or, to be more precise, the part of the ear that projects like a little wing from the head. In Latin…
- Alveolar Pertaining to the alveoli, the tiny air sacs in the lungs. The exchange of oxygen and carbon dioxide takes…
- Napiform A little-used but useful adjective meaning turnip-shaped. Large and round at the top and tapering down…
- Carcinoma in situ Cancer that involves only the place in which it began and that has not spread. Carcinoma in situ is an…
- Channelopathy A disease involving dysfunction of an ion channel. Channelopathies are known that involve the ion channels…
- Allergic rhinitis Medical term for hay fever, a condition due to allergy that mimics a chronic cold. (Hay fever is a misnomer…
- Headache Headache: A pain in the head with the pain being above the eyes or the ears, behind the head (occipital), or…
- Seizure, salaam See: Infantile spasms
- Rash, varicella Rash, varicella: Varicella (chickenpox) is characterized by a rash, often the first sign of the disease. The…