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).
Drug activity
A measure of the physiological response a drug produces. A less active drug produces less response (and visa versa)
Read the definitionRandom terms
Show more- Poly1 isomerase An enzyme also known as Pin1. See: Pin1
- Hematoma, nasal septum See: Nasal septum hematoma
- PARK9 Familial Parkinson disease type 9
- Microscopic anatomy The study of the form of structures seen under the microscope, as opposed to gross anatomy which involves…
- Lazy eye An eye that diverges in gaze. A lazy eye is formally called strabismus. A lazy eye (strabismus) can be due to…
- Cartilage Firm, rubbery tissue that cushions bones at joints. A more flexible kind of cartilage connects muscles with…
- Absolute CD4 count The number of 'helper' CD4 T-lymphocytes in a cubic millimeter of blood. With HIV, the absolute CD4 count…
- Abuse, steroid Use of substances containing anabolic steroids to increase muscle mass. Such steroids can have many side…
- King's evil An old term for tuberculosis of the lymph nodes in the neck. Also known as scrofula
- Lymph An almost colorless fluid that travels through vessels called lymphatics in the lymphatic system and carries…
- VBAC Vaginal Birth After Cesarian section. Although the abbreviation VBAC (pronounced VEE-back) does not appear in…
- Drug, antimicrobial A drug used to treat a microbial infection. The term 'antimicrobial' is a general one that refers to a group…