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).
Thyroid hormones
Chemical substances made by the thyroid gland, which is located in the front of the neck. This gland uses iodine to make thyroid hormones, which are essential for the function of every cell in the body. They help regulate growth and the…
Read the definitionRandom terms
Show more- Recalls, FDA Recalls: The recall of a defective or possibly harmful product by the US Food & Drug Administration (the…
- Interstice A small space between things, especially between things that are usually closely spaced, such as cells…
- Stone-mason's disease See: Silicosis
- Camelpox A severe disease of camels in northern Africa and southwestern Asia caused by the camelpox virus. This virus…
- R-2 Street term for Rohypnol
- Anisocytosis Excessive inequality in the size of the red blood cells. Anisocytosis ('aniso') is apparent on a blood smear…
- Intestinal obstruction Blockage of the intestine by infolding (intussusception), malformation, tumor, digestive problems, a foreign…
- Muscular dystrophy, oculopharyngeal A form of muscular dystrophy that begins in the muscles of the eyes and throat. It usually appears between…
- Photophobia Painful oversensitivity to light. For example, there is photophobia in measles (rubeola). Keeping the lights…
- Spleen An organ located in the upper left part of the abdomen near the stomach. The spleen produces lymphocytes; it…
- SiRNA Abbreviation for small inhibitory RNA, a short sequence of RNA which can be used to silence gene expression
- Blastocyst A thin-walled hollow structure in early embryonic development that contains a cluster of cells called the…