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).
Cell, antigen-presenting
A cell that can 'present' antigen in a form that T cells can recognize it. The cells that can 'present' antigen include B cells and cells of the monocyte lineage (including macrophages)
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Show more- Meningitis vaccine This term usually refers to a vaccine used to prevent meningococcal meningitis, an inflammation of the…
- Medicine, adoption Medicine for the adopted child, including pre-adoption counseling and evaluation based on a child's medical…
- Diaphragm (muscle) The muscle that separates the chest (thoracic) cavity from the abdomen. The diaphragm is the main muscle of…
- Cytotoxic Toxic to cells, cell-toxic, cell-killing. Any agent or process that kills cells. Chemotherapy and…
- Psychosis, intensive care unit A disorder in which patients in an intensive care unit (ICU) or a similar hospital setting may experience…
- Papillomatosis, recurrent respiratory Recurrent respiratory papillomatosis involves the growth of numerous warty growths in the larynx on the vocal…
- BMT Bone marrow transplantation, a procedure in which doctors replace bone marrow that is diseased (or damaged)…
- DNA, mitochondrial Mitochondrial DNA (mtDNA) is the DNA of the mitochondrion, a structure situated in the cytoplasm of the cell…
- Meningococcal infection Infection with the bacterium Neisseria meningitidis. (Neisseria was formerly called Meningococcus and the…
- Hypervolemic Pertaining to hypervolemia, an abnormal increase in blood volume. For example, hypervolemic hyponatremia…
- Pericardial sac A conical sac of fibrous tissue which surrounds the heart and the roots of the great blood vessels. Also…
- Dermis The lower or inner layer of the two main layers of cells that make up the skin.The dermis contains blood…