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).
Methemoglobinemia
The presence in the blood of methemoglobin, a form of hemoglobin that is useless for carrying oxygen and delivering it to tissues throughout the human body. Since hemoglobin is the key carrier of oxygen in the blood, its replacement by…
Read the definitionRandom terms
Show more- XP Xeroderma pigmentosum
- Atrophy Wasting away or diminution. Muscle atrophy is wasting of muscle, decrease in muscle mass. A nerve can also…
- Celiac disease Celiac disease: A disorder resulting from an immune reaction to gluten, a protein found in wheat and related…
- Alopecia areata Alopecia areata: A patchy baldness which typically begins with patchy hair loss on the scalp and sometimes…
- Adam's apple A familiar anatomic feature in the front of the neck that is due to the forward protrusion of the thyroid…
- Randomized The use of chance alone to assign the participants in an experiment or trial to different groups in order to…
- TLSO Thoracolumbosacral orthosis. This is one of two main types of braces used to correct the lateral (sideways)…
- Deoxyhemoglobin The form of hemoglobin without oxygen, the predominant protein in red blood cells. Hemoglobin forms an…
- Toddler A young child who is learning to walk with short unsteady steps. The word toddle is of unknown origin
- Tranquilizer In pharmacology, a drug that calms and relieves anxiety. The first tranquilizer, chlordiazepoxide…
- Chemotherapy, topical Chemotherapy, topical: Treatment with an anticancer drug in a lotion, ointment or cream that is applied to…
- Radiation therapy Radiation therapy: The use of high-energy rays to damage cancer cells, stopping them from growing and…