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).
Upregulation
An increase in the number of receptors on the surface of target cells, making the cells more sensitive to a hormone or another agent. For example, there is an increase in uterine oxytocin receptors in the third trimester of pregnancy…
Read the definitionRandom terms
Show more- Vocal cord One of two small bands of muscle within the larynx. These muscles vibrate to produce the voice. The vocal…
- Lithotomy Surgical removal of a stone, especially a kidney or bladder stone. From the Greek roots litho-, stone + tome…
- T-suppressor count A test that counts the number of T-suppressor (T-8) cells in the bloodstream. It appears that some T-8 cells…
- Blighted ovum A fertilized ovum (egg) that did not develop or whose development ceased at an early stage, before 6 or 7…
- Transvestitism Transvestitism, or transvestic fetishism, refers to the practice by heterosexual males of dressing in female…
- Naming diseases See: Disease nomenclature
- Atrial Pertaining to the atria, the upper chambers of the heart, as in atrial fibrillation and atrial septal defect
- Smoldering leukemia A condition in which the bone marrow does not function normally. It does not produce enough blood cells. This…
- Myalgia Pain in a muscle; or pain in multiple muscles. Myalgia means muscle pain. There are many specific causes of…
- Involuntary Done other than in accordance with the conscious will of the individual. The opposite of voluntary. The terms…
- Coronary artery brachytherapy Local radiation treatment within an artery to the heart. Coronary artery brachytherapy has been used to…
- Extrafallopian A term meaning 'outside the fallopian tube.' There are two fallopian tubes in female mammals, including human…