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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
RNA inactivation
A technique for inactivating genes in a cell through the introduction of double-stranded RNA into the cell. RNA inactivation is based on the phenomenon that animal cells destroy RNA when they meet it in the form of a double strand. If a…
Read the definitionRandom terms
Show more- Time, prothrombin A clotting test, the prothrombin time is done to test the integrity of part of the clotting scheme. The…
- Ocular Having to do with the eye. In a microscope, the lens closest to the eye is termed the ocular (the eyepiece)…
- Heterosexuality Sexuality directed toward someone of the opposite sex
- Ninth cranial nerve The ninth cranial nerve is the glossopharyngeal nerve. The 12 cranial nerves, the glossopharyngeal nerve…
- Hypovolemia An abnormal decrease in blood volume or, strictly speaking, an abnormal decrease in the volume of blood…
- Tampon A tampon is a pack or pad used to plug, to stanch, to stop the flow of blood or other fluids. The tampon may…
- Hallux valgus A big toe (the hallux) that is bent outward (valgus) so it overlaps the 2nd toe. A bunion is a localized…
- Pernicious anemia Pernicious anemia: A blood disorder caused by inadequate vitamin B12 in the blood. Patients who have this…
- Hallucination A profound distortion in a person's perception of reality, typically accompanied by a powerful sense of…
- Nonlymphocytic leukemia, acute Leukemia, acute: Abbreviated ANLL. More commonly called acute myeloid leukemia (AML). A quickly progressive…
- Frigidity Failure of a female to respond to sexual stimulus; aversion on the part of a woman to sexual intercourse…
- Joint, ball-and-socket A ball-and-socket joint is one in which the round end of a bone fits into the cavity of another bone. The hip…