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).
Undifferentiated cancer
Cancer: A cancer in which the cells are very immature and 'primitive' and do not look like cells in the tissue from it arose. As a rule, an undifferentiated cancer is more malignant than a cancer of that type which is well differentiated…
Read the definitionRandom terms
Show more- APC (medication) Aspirin, phenacetin, and caffeine (a pill containing all three)
- Pituitary gigantism Excessive growth and too much height due to chronic overactivity of the pituitary gland which is located at…
- Nerve pathways, visual The optic nerves serving the eyes join behind the eyes just in front of the pituitary gland to form a…
- Hysteroscopy A procedure to see inside the uterus (the womb) using a viewing tube that is inserted into the vagina up…
- Thyroid hormone organification defect IIb See Pendred syndrome
- Tooth, cracked, syndrome A toothache caused by a broken tooth (tooth fracture) without associated cavity or advanced gum disease…
- Clitoral Pertaining to the clitoris, the small elongated erectile body in the female homologous with the penis in the…
- D-IBS Diarrhea-predominant IBS (irritable bowel syndrome)
- Histology The study of the form of structures seen under the microscope. Also called microscopic anatomy, as opposed to…
- Met Methionine. See also: Amino acid symbols
- PAPP-A Pregnancy-associated plasma protein A
- DTC Direct-to-consumer, as in DTC advertising of prescription drugs