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).
RUL
Acronym for the right upper lobe (of the lung). The right lung has three lobes: the right lower lobe (RLL), the right middle lobe (RML), and the right upper lobe (RUL). The left lung has but two lobes: the left upper lobe (LUL) and the…
Read the definitionRandom terms
Show more- Scan, thyroid An image taken of the thyroid gland after radioactive iodine is taken by mouth. The thyroid gland is in front…
- Ergophobia An abnormal and persistent fear of work. Sufferers of ergophobia experience undue anxiety about the workplace…
- Care, critical See: Critical care
- Meiotic drive Preferential selection during meiosis (germ cell production). In meiotic drive there is preferential…
- Adjacent Lying nearby. Related terms include superjacent, subjacent, and circumjacent. From ad-, near + the Latin…
- Watermelon A fruit of African origin that is, in reality, a vegetable related to cucumbers and squash. Watermelon is 92%…
- Selenoprotein A peculiar class of proteins that contain the essential trace element selenium. The selenium in these…
- Hecht syndrome A striking genetic disorder in which abnormally short muscles in the jaw make it impossible to open the mouth…
- Tension, intravenous The pressure of the blood within a vein, the venous pressure
- Radioactive iodine An isotope of the chemical element iodine that is radioactive. Radioactive iodine is used in diagnostic tests…
- Circinate balanitis A form of skin inflammation around the penis in males with Reiter's syndrome. The skin around the shaft and…
- Scoliosis, congenital A structurally normal spine that appears to have a lateral curve (scoliosis). Nonstructural scoliosis…