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).
Oral contraceptive
A birth control pill taken by mouth. Most oral contraceptives include both estrogen and progesterone. When given in certain amounts and at certain times in the menstrual cycle, these hormones prevent the ovary from releasing an egg for…
Read the definitionRandom terms
Show more- Tarantism A disease once thought to result from the bite of the tarantula spider. This extraordinary affliction was…
- Total hip replacement Total hip replacement: Surgery in which the diseased ball and socket of the hip joint are completely removed…
- Beta error The statistical error (said to be 'of the second kind' or type II) made in testing when it is concluded that…
- Heterosexuality Sexuality directed toward someone of the opposite sex
- Mediterranean anemia Better known today as thalassemia (or as beta thalassemia or thalassemia major). The clinical picture of this…
- Jewett staging system A system for determining the stage of a prostate cancer. The system uses ABCD. The letters 'A' and 'B'…
- Necrosis The death of living cells or tissues. Necrosis can be due, for example, to ischemia (lack of blood flow)…
- Hemorrhagic Pertaining to bleeding or the abnormal flow of blood. The patient may have an internal hemorrhagic problem…
- Prostaglandin E2 One of the prostaglandins, a group of hormone-like substances that participate in a wide range of body…
- K (potassium) K is the symbol for potassium, the major positive ion (cation) found inside of cells. The chemical notation…
- Shoulder dislocation Displacement of the ball of the shoulder joint (the top rounded portion of the upper arm bone, or humerus)…
- Cyanogen chloride See: Cyanide