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).
Pregnancy symptoms
Pregnancy symptoms: A symptom or sign of pregnancy. These symptoms and signs depend upon the time in pregnancy. In the first trimester of pregnancy, the first sign of pregnancy is most often a missed menstrual period. If a sexually active…
Read the definitionRandom terms
Show more- Hormone, antidiuretic (ADH) A relatively small (peptide) molecule that is released by the pituitary gland at the base of the brain after…
- Hereditary amyloidosis Amyloidosis: A familial (inherited) disorder in which protein deposits (amyloid) accumulate in one or more…
- Labia, oral The lips around the mouth. See lip.
- Temporary loss of consciousness A partial or complete loss of consciousness with interruption of awareness of oneself and ones surroundings…
- CDNA Complementary DNA. cDNA is single-stranded DNA made in the laboratory from a messenger RNA template under the…
- De Lange syndrome A relatively common birth defect syndrome with multiple malformations and mental retardation of unknown…
- Nit Nits are lice eggs. They are hard to see and are often confused with dandruff or hair spray droplets. Nits…
- Dioxin One of a number of poisonous petroleum-derived chemicals which are produced when herbicides (substances used…
- Sleep paralysis A frightening form of paralysis that occurs when a person suddenly finds himself or herself unable to move…
- Dilated cardiomyopathy A disorder in which the chambers of the heart are dilated (enlarged) because the heart muscle is weakened and…
- Black henna A tattoo ink and paste consisting of henna with other ingredients added, sometimes including…
- Immunization, meningococcal A vaccine to prevent meningococcal meningitis, an inflammation of the membranes that cover the brain and…