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).
Tyrosine
An amino acid, one of the 20 building blocks of protein. A nonessential amino acid, tyrosine is produced from another amino acid, phenylalanine. Deficiency of the enzyme phenylalanine hydroxylase that catalyzes this reaction causes the…
Read the definitionRandom terms
Show more- Amyloid Any of a number of complex proteins that are deposited in tissues and that share selected laboratory features…
- Family history of colorectal cancer See: Colon cancer family history
- Blister agent See: Vesicant
- HCG Human chorionic gonadotropin, a human hormone made by chorionic cells in the fetal part of the placenta…
- Dip, wax A treatment for the symptoms of joint and muscle conditions, such as arthritis, that consists of melted…
- Low vision A visual impairment, not corrected by standard glasses, contact lenses, medicine, or surgery, that interferes…
- Pterygium A winglike triangular membrane. Although a pterygium can be anywhere, including behind the knee, it commonly…
- Morning glory syndrome A birth defect of the optic nerve (the nerve to the eye) in which there is a coloboma (cleft) of the optic…
- Sign, Macewen A sign to detect hydrocephalus and brain abscess. Percussion (tapping) on the skull at a particular spot…
- Ligament, anterior cruciate See: Anterior cruciate ligament
- Bacteriostatic Capable of inhibiting the growth or reproduction of bacteria. Different from bactericidal (capable of killing…
- Neonatal Pertaining to the newborn period which, by convention, is the first four weeks after birth.