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- Trip-hammer pulse See: Pulse, water hammer
- Radiation therapy, internal Radiation therapy in which a small container of radioactive material is implanted in the body, in or near the…
- Hydrocephalus, communicating Hydrocephalus in which there is no obstruction to the flow of the cerebrospinal fluid (CSF). Specifically…
- Co-stimulation An event in the immune system involving the delivery of a second signal by an antigen-presenting cell. The…
- Chronic daily headache See: Headache, chronic daily
- Vaccination, mumps See Immunization, MMR
- Block, caudal See Caudal anesthesia
- Fridayitis A perplexing condition that suddenly strikes some workers and students on Friday and leads to their absence…
- Geiger counter The most commonly used portable radiation detection and measuring instrument, consisting of a gas-filled tube…
- Male gonad The male gonad, the testicle (or testis), located behind the penis in a pouch of skin (the scrotum). The…
- Tache noire Black spot (in French), a small ulcer covered with a black crust at the site of a tick bite, characteristic…
- Large-cell lymphoma A novel type of bacterium first isolated in Hong Kong in 2001 from the blood and empyema (pus in the chest)…