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).
Posterior pituitary
The back portion of the pituitary, a small gland in the head called the master gland. The posterior pituitary secretes the hormone oxytocin which increases uterine contractions and antidiuretic hormone (ADH) which increases reabsorption of…
Read the definitionRandom terms
Show more- Liquid nitrogen Nitrogen in a liquid state. Liquid nitrogen is supercool -- about 200 degrees Celsius (320 degrees…
- CDC The Centers for Disease Control and Prevention, the US agency charged with tracking and investigating public…
- Hemoglobin S The most common type of abnormal hemoglobin and the basis of sickle cell trait and sickle cell anemia…
- Nose job Slang for plastic surgery on the nose, known medically as a rhinoplasty. This is a facial cosmetic procedure…
- Venous catheter, central See: Catheter, central venous
- Base pair Two DNA bases complementary to one another (A and T or G and C) that join the complementary strands of DNA to…
- Melancholia Old term for depression.
- Itch, jellyfish An intensely itchy rash due to contact with the tiny thimble jellyfish (Linuche unguiculata). These jellyfish…
- Artificial nose See: Nasal prosthesis
- Methotrexate Methotrexate: A drug that acts as an antimetabolite and specifically as a folic acid antagonist that inhibits…
- Syndrome of ichthyosis, spasticity, oligophrenia A: Also known as the Sjogren-Larsson syndrome, this is a genetic (inherited) disease characterized by a triad…
- Melanoma, intraocular See: Intraocular melanoma