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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Radioimmunoassay
A very sensitive, specific laboratory test (assay) using radiolabeled (and unlabeled) substances in an immunological (antibody-antigen) reaction
Read the definitionRandom terms
Show more- Penrose drain A soft tube-shaped rubber or silicone drain. Named for the American gynecologist Charles Bingham Penrose…
- Sutton's law In medicine, the principle of going straight to the most likely diagnosis. The law is named for the bank…
- Study population The group of individuals in a study. In a clinical trial, the participants make up the study population. The…
- Orthotic A support, brace, or splint used to support, align, prevent, or correct the function of movable parts of the…
- Ectrodactyly >transverse terminal aphalangia (absence of the last bone in the finger or toe), >adactylia (total absence of…
- Axon A long fiber of a nerve cell (a neuron) that acts somewhat like a fiber-optic cable carrying outgoing…
- Disease surveillance The ongoing systematic collection and analysis of data and the provision of information which leads to action…
- Menstrual irregularity The normal menstrual cycle is about four weeks long, and often follows the phases of the moon. Its length…
- Translocation, Robertsonian A relatively very common and medically significant type of chromosome rearrangement that is formed by fusion…
- Fenfluramine A weight loss drug, in a class of drugs called anorectics which decrease appetite. This drug, sold in the US…
- Goiter, toxic multinodular Condition in which the thyroid gland contains multiple lumps (nodules) that are overactive and produce excess…
- Power outage preparations It is recommended that people make an emergency plan that includes a disaster supply kit. This kit should…