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).
Immunodeficient
Lacking immunity and so susceptible to infection.
Read the definitionRandom terms
Show more- Reaction, polymerase chain See: Vasovagal reaction.
- NCI (National Cancer Institute) The National Cancer Institute is one of the National Institutes of Health (NIH) in the U.S. The mission of…
- Filariasis See Lymphatic filariasis
- Appendix A small outpouching from the beginning of the large intestine (the ascending colon). Formally called the…
- Gene pool The sum total of genes, with all their variations, possessed by a particular species at a particular time
- Cortical blindness Blindness due to loss or injury to the visual cortex, that section of the cerebral cortex responsible for…
- Heterochromatin Chromosomal material that is darkly staining and tightly coiled throughout the cell cycle and that is, for…
- Red blood cell The blood cell that carries oxygen. Red cells contain hemoglobin and it is the hemoglobin which permits them…
- Internal pacemaker Pacemaker: A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm…
- Yeast genome All of the genetic information contained in yeast (Saccharomyces cerevisiae). The genomes of particular…
- Claudication, intermittent Claudication, intermittent: An aching, crampy, tired, and sometimes burning pain in the legs that comes and…
- Polyp A mass of tissue that develops on the inside wall of a hollow organ, as within the colon or rectum. The word…