MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Ovum
An egg in the ovary of the female. This egg is called the female 'gamete' or sex cell. It combines with the male gamete, called a sperm, to form a zygote. This formation process is called 'fertilization.' (see sperm, zygote)
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Show more- Bicarbonate In medicine, bicarbonate usually refers to bicarbonate of soda (sodium bicarbonate, baking soda) white powder…
- Cardiovascular The circulatory system comprising the heart and blood vessels which carries nutrients and oxygen to the…
- Fever, Rocky Mountain spotted (RMSF) Fever, Rocky Mountain spotted (RMSF): An acute febrile (feverish) disease initially recognized in the Rocky…
- Autonomic failure Malfunction of the autonomic nervous system due to imbalance between the sympathetic and parasympathetic…
- Valves, heart There are four heart valves. All are one-way valves. Blood entering the heart first passes through the…
- Ear wax Ear wax: A natural wax-like substance secreted by special glands in the skin on the outer part of the ear…
- Interstitial radiation Radiation therapy in which a radioactive material is placed directly into a tumor.
- Neuralgia, facial Severe pain, usually occurring in bursts, that emanates along the path of the trigeminal nerve. The…
- Urethral meatus, female The urethra is the transport tube leading from the bladder to discharge urine outside the body. In females…
- Centimorgan (cM) A unit of measure of genetic recombination frequency. One cM is equal to a 1% chance that a marker at one…
- GOLD The Global Initiative for Chronic Obstructive Lung Disease (GOLD), a collaborative project of the US National…
- Nonagenarian Someone in his or her ninties, that is, between 90 and 99 years of age. See also: Age by decade