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.
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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).
Randomized clinical trial
A clinical trial in which the participants are assigned randomly (by chance alone) to different treatments. See also: Randomized controlled trial
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Show more- Fibrosis, radiation Scarring of the lungs from radiation. Radiation fibrosis is a sequel of radiation pneumonitis (inflammation…
- Mutation, private A rare mutation found usually only in a single family or a small population. (It is like a privately printed…
- Vascular bed The vascular system, or a part thereof: for example, the pulmonary vascular bed describes the blood vessels…
- Nymph A nymph is a stage in the life cycle of certain arthropods, as ticks and lice. (Not all nymphs are in Greek…
- Nerve, afferent A nerve that carries impulses toward the central nervous system (CNS). The opposite of an afferent nerve is…
- Vaginal contraceptive sponge A contraceptive device that is donut-shaped, made of plastic, contains a spermicide (nonoxynol-9) and is…
- Eyedrop test There are many types of eyedrops and many types of eyedrop tests. One of the most common eyedrop tests is…
- Joint, elbow Three long bones meet in the middle portion of the arm at the elbow joint. The bone of the upper arm…
- Biological chemistry Another name for biochemistry -- the study of the chemistry of living cells, tissues, organs and organisms…
- Expiration date The date for a drug estimated for its shelf life with proper storage in sealed containers away from harmful…
- Affective disorder, seasonal (SAD) Depression that tends to occur (and recur) as the days grow shorter in the fall and winter. It is believed…
- Glaucoma, low tension See: Glaucoma, normal tension