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).
Melasma
Pigmentation of the face, most commonly on the malar area (the upper cheek), bridge of nose, forehead, and upper lip, that occurs in half of women during pregnancy. Birth control pills can also cause melasma. However, hormone therapy after…
Read the definitionRandom terms
Show more- Essential fatty acid An unsaturated fatty acid that is essential to human health, but cannot be manufactured in the body. There…
- Structural genomics The study of the proteome, the three-dimensional structures of thousands upon thousands of proteins, in fact…
- Luetic 1. Relating to syphilis, caused by it, or suffering from it.2. A person with syphilis. From lues, an old name…
- Deafness, congenital Deafness, congenital: Loss of hearing present at birth. Congenital deafness contrasts to acquired deafness…
- Algia Word ending indicating pain, as in arthralgia (joint pain), cephalgia (headache), fibromyalgia, mastalgia…
- Menorrhagia Excessive uterine bleeding occurring at the expected intervals of the menstrual periods. The bleeding from…
- Hormone, human chorionic gonadotropin A group of hormones, the most important being aldosterone, that regulate the balance of water and…
- Jewett staging system A system for determining the stage of a prostate cancer. The system uses ABCD. The letters 'A' and 'B'…
- Ulcer, peptic A peptic ulcer is a hole in the lining of the stomach, duodenum, or esophagus. A peptic ulcer of the stomach…
- Care, ambulatory See: Ambulatory care
- Syndrome, trisomy 21 A common chromosome disorder, often called Down syndrome, due to an extra chromosome number 21 (trisomy 21)…
- Sponge, vaginal contraceptive See: Vaginal contraceptive sponge