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).
Sperm
A sperm is the male 'gamete' or sex cell. It combines with the female 'gamete,' called an ovum, to form a zygote. The formation process is called 'fertilization.' (see ovum, zygote).
Read the definitionRandom terms
Show more- Gregarious parasite A parasite whose nutritional requirements permit several to many of them to live simultaneously in or on the…
- Sexagenarian Someone in his or her sixties. See also: Age by decade
- Hardy, James D. Pioneering American transplant surgeon responsible for three epochal operations: the first human lung…
- Stroke index A cardiodynamic measure. Stroke volume is the amount of blood the left ventricle ejects in one beat, measured…
- Eruption, bather's An intensely itchy rash due to contact with the tiny thimble jellyfish (Linuche unguiculata). These jellyfish…
- Laryngeal nerve, recurrent One of the best known branches of the vagus nerve, a very long nerve that originates in the brainstem. After…
- Physician-assisted suicide Suicide: The voluntary termination of one's own life by administration of a lethal substance with the direct…
- Speech, esophageal See: Esophageal speech
- Asymptomatic Without symptoms. For example, an asymptomatic infection is an infection with no symptoms
- Aristolochia fangchi A Chinese herb that is injurious to the kidney and is also associated with an increased risk of cancer of the…
- Provigil Brand name of the drug modafinil. See: Modafinil
- DGS See: DiGeorge syndrome