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).
Comedones
The plural of comedo, the primary sign of acne, consisting of a dilated (widened) hair follicle filled with keratin squamae (skin debris), bacteria, and sebum (oil). Comedones may be closed or open. A closed comedo has an obstructed…
Read the definitionRandom terms
Show more- Last menstrual period By convention, pregnancies are dated in weeks starting from the first day of a woman's last menstrual period…
- Dacryoadenitis Inflammation of a lacrimal gland (a gland that produces tears)
- Immunity, active Immunity, active: The production of antibodies against a specific agent by the immune system. Active immunity…
- CK The military designation for cyanogen chloride. See: Cyanide
- Rash Rash: Breaking out (eruption) of the skin. Medically, a rash is referred to as an exanthem.
- Nosebleed, causes of The nose is a part of the body that is very rich in blood vessels (vascular) and is situated in a vulnerable…
- Ulcer, peptic A peptic ulcer is a hole in the lining of the stomach, duodenum, or esophagus. A peptic ulcer of the stomach…
- Anemic Relating to anemia, the condition of having less than the normal number of red blood cells or less than the…
- PAPPA Pregnancy-associated plasma protein A
- Tachycardia A rapid heart rate, usually defined as greater than 100 beats per minute. The tachycardias include sinus…
- Spasmodic dysphonia A voice disorder caused by involuntary movements of one or more muscles of the larynx or voice box. People…
- Glomeruli The plural of glomerulus