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).
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- ESRD End-stage renal disease
- Microscope, fluorescent See: Fluorescent microscope
- Elastin degrading enzyme See: Elastase
- Macule A small localized change in the color of skin that is neither raised (elevated) nor depressed. Macules are…
- Senile lentigo A benign pigmented flat spot on sun-exposed skin in older adults, especially on the back of the hands and on…
- Sitophilus granarius See: Granary weevil
- Disorders, lymphoproliferative Malignant diseases of the lymphoid cells and cells from the reticuloendothelial system (which take up and…
- Uterus, contraction of the The tightening and shortening of the uterine muscles. During labor, contractions accomplish two things: (1)…
- Phenomenon, knee See: Knee jerk
- Defensive medicine Medical practices designed to avert the future possibility of malpractice suits. In defensive medicine…
- Nipple shield A cap or dome, usually made today of plastic (formerly, rubber), placed over the nipple and areola during…
- Regimen With the accent on the first syllable (reg as in Reggie Jackson), a regimen is a plan, a regulated course…