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).
Adrenal medulla
The inner portion of adrenal gland. (The outer portion is the adrenal cortex). The adrenal medulla makes epinephrine (adrenaline) and norepinephrine (noradrenaline). Epinephrine is secreted in response to low blood levels of glucose as…
Read the definitionRandom terms
Show more- Y chromosome sex-determining region See: Y sex-determining region
- Abruptio (abruptio placentae) Premature separation of the placenta from the wall of the uterus. Abruption is a potentially serious problem…
- Cancer, non-small cell lung Cancer of the lung which is not of the small cell carcinoma (oat cell carcinoma) type. The term 'non-small…
- Viscera The internal organs of the body, specifically those within the chest (as the heart or lungs) or abdomen (as…
- Vision, peripheral See: Peripheral vision
- Syndrome A set of signs and symptoms that tend to occur together and which reflect the presence of a particular…
- Supernumerary nipple An extra nipple. Supernumerary nipples are usually smaller than normal and vestigial (nonfunctional, without…
- Watchful waiting Closely monitoring a patient's condition but withholding therapy until the sign and symptom appear or change…
- Pinworm infection Pinworm infection: An infection caused by a small, white intestinal worm: the pinworm or, more formally…
- Elbow bursitis, treatment of If non-infectious, elbow bursitis treatment includes rest, ice, and medications for inflammation and pain…
- Intersex A group of conditions sometimes referred to as disorders of sexual development (DSDs) in which there is a…
- Chloride The major anion (negatively charged substance) in the blood and extracellular fluid (the body fluid that lies…