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).
Capillaries
Capillaries are the smallest of blood vessels. They serve to distribute oxygenated blood from arteries to the tissues of the body and to feed deoxygenated blood from the tissues back into the veins. The capillaries are thus a central…
Read the definitionRandom terms
Show more- Endometrial cancer Cancer of the womb (the uterus ). Endometrial cancer occurs most often in women between the ages of 55 and 70…
- Scoliosis, functional A structurally normal spine that appears to have a lateral curve (scoliosis). Nonstructural scoliosis…
- Compression 1. The act of pressing together. As in a compression fracture, nerve compression, or spinal cord compression…
- ADA deficiency Lack of normal adenosine deaminase (ADA) activity, a genetic (inherited) condition causing one form of severe…
- HTR1A A gene on chromosome 5 that encodes a type of receptor for serotonin. See: 5-HT1A
- Blast phase Refers to advanced chronic myelogenous leukemia. In this phase, the number of immature, abnormal white blood…
- Plasmodium The parasite guilty in the case of malaria (paludism). Plasmodium is a type of protozoa, a single-celled…
- Kindercam See: Kiddie cam
- Normoxia Normal levels of oxygen. From norm- (normal) + -ox- (oxygen) + -ia = a normal oxygen state.
- Unsaturated fat A fat that is liquid at room temperature and comes from a plant such as olive, peanut, corn, cottonseed…
- Colostomy, transverse A colostomy in which the exterior opening (stoma) is located on the upper abdomen
- Tissue plasminogen activator (tPA) An enzyme that helps dissolve clots. tPA is made by the cells lining blood vessels and has also been…