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- FBLN5 The gene encoding the protein known as fibulin 5. See: Fibulin 5
- Lymph node, sentinel The first lymph node ('gland') to receive lymphatic drainage from a tumor. Which lymph node is the sentinel…
- Vaccine, meningococcal A vaccine to prevent meningococcal meningitis, an inflammation of the membranes that cover the brain and…
- Locomotive system Limited to a local region. See also: Locoregional anesthesia; Locoregional metastasis.
- Paronychia Inflammation of the folds of tissue surrounding the nail due to infection. The infection may be bacterial…
- Disinsection Spraying aircraft for insects, a procedure called disinsection. Some countries in Africa, Latin America, the…
- Kveim test A skin test for detecting sarcoidosis, a disease of unknown origin that causes inflammation of body tissues…
- PX Medical abbreviation for prognosis
- Conjoined twins See: Conjoined twin
- Perianal abscess An abscess next to the anus that causes tenderness, swelling, and pain on defecation
- Medication, beta-blocker Drugs that antagonize the action of adrenaline (a beta adrenergic substance) and relieve stress to the heart…
- Science (journal) A weekly journal concerning science. Science was founded in 1880 by one of the world's most famous…