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).
Platelet count
The calculated number of platelets in a volume of blood, usually expressed as platelets per cubic millimeter (cmm) of whole blood. Platelets are the smallest cell-like structures in the blood and are important for blood clotting and…
Read the definitionRandom terms
Show more- Sight, day Night blindness. Listed in medical dictionaries under 'Nyctalopia' from the Greek 'nyct' (night) + 'aloas'…
- Vein, pulmonary One of four vessels that carry aerated blood from the lungs to the left atrium of the heart. (The four are…
- Bovine Having to do with cows and cattle, as in bovine spongiform encephalopathy (mad cow disease), bovine…
- Vanishing twin A twin detected in early pregnancy that is miscarried, frequently by resorption, without clinical signs or…
- Screening, newborn hearing Testing of the newborn baby's ability to hear. Newborn screening of hearing is done with automated auditory…
- Mitochondrial disease Mitochondrial disease: Mutations (changes) in the mitochondrial chromosome are responsible for a number of…
- Peri- Prefix meaning around or about. For example, pericardial is around the heart, and periaortic lymph nodes are…
- Lochia The fluid that weeps from the vagina for a week or so after delivery of a baby. At first the lochia is…
- Sulfa drug One of the sulfonamides, the sulfa-related antibiotics which are used to treat bacterial and some fungal…
- Guanine One of the four bases in DNA that make up the letters ATGC. Guanine is the 'G'. The others are adenine…
- Monosodium glutamate MSG, a sodium salt of the amino acid glutamic acid that enhances the flavor of certain foods. Originally…
- Lipodystrophy, cephalothoracic A disorder characterized by painless symmetrical diffuse deposits of fat beneath the skin of the neck, upper…