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).
Post-traumatic stress disorder
Stress disorder: A common anxiety disorder that develops after exposure to a terrifying event or ordeal in which grave physical harm occurred or was threatened. Family members of victims also can develop the disorder. PTSD can occur in…
Read the definitionRandom terms
Show more- DNA virus A virus in which the genetic material is DNA rather than RNA. The DNA may be either double- or…
- Nasal flu vaccine A live attenuated (weakened) influenza virus vaccine that is administered as a nasal spray. The brand name…
- Fatty acid, trans An unhealthy substance, also known as trans fat, made through the chemical process of hydrogenation of oils…
- Operating room A facility equipped for performing surgery. Abbreviated OR
- Transsexualism A consistently strong desire to change one's anatomical gender. Some transsexuals were misassigned gender at…
- Marijuana Marijuana: A very common street and recreational drug that comes from the marijuana plant. The plant that…
- Dopamine An important neurotransmitter (messenger) in the brain. Dopamine is classified as a catecholamine (a class of…
- Lupus Lupus: A chronic inflammatory condition caused by an autoimmune disease. An autoimmune disease occurs when…
- Infiltrate To penetrate. If an IV infiltrates, the IV fluid penetrates the surrounding tissue.
- Cystoscope An optical instrument (a scope) that is inserted through the urethra into the bladder. A cystoscope has two…
- Antibody cross reactivity The ability of an antibody to react with similar antigenic sites on different proteins
- Unilateral Having, or relating to, one side. Unilateral is as opposed, for example, to bilateral (which means having, or…