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).
Amino acid, nonessential
An amino acid that can be made by humans and so is not essential to the human diet. There are 11 nonessential amino acids: alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and…
Read the definitionRandom terms
Show more- Meter, peak-flow This hand-held device measures air flow (how fast air is blown out of the lungs). Patients can use peak-flow…
- Appendix A small outpouching from the beginning of the large intestine (the ascending colon). Formally called the…
- Jejunostomy A surgical operation to create an opening of the jejunum (a part of the (a part of the small intestine) to a…
- Cardiac rehabilitation A program for people with heart disease designed to reduce future heart risks. Cardiac rehabilitation usually…
- Focal Pertaining to a focus which in medicine may refer to:1. The point at which rays converge as, for example, in…
- Dermatomyositis A chronic inflammatory disease of skin and muscle which is associated with patches of slightly raised reddish…
- Materia medica 1. The ingredients used to make medications, whether those be for medicine, homeopathy, herbal medicine, or…
- Chromosome band One of the transverse bands produced on chromosomes by differential staining techniques. Depending on the…
- Basal metabolic rate A measure of the rate of metabolism. For example, someone with an overly active thyroid will have an elevated…
- Genome, Vibrio cholerae The genome of the bacterium that causes cholera. This genome contains over 4 million bases in its DNA…
- Raynaud's disease Condition resulting in skin discoloration of the fingers and/or toes when a person is exposed to changes in…
- Microchimerism The presence of two genetically distinct and separately derived populations of cells, one population being at…