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).
Oocyte
A female germ cell in the process of development. The oocyte is produced in the ovary by an ancestral cell called an oogonium and gives rise to the ovum (the egg) which can be fertilized
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Show more- Hypnagogic hallucination A vivid dreamlike hallucination that occurs as one is falling asleep. The opposite of an hypnopompic…
- Yd. Abbreviation for a yard as a measure of length. A yard equals 3 feet or 36 inches. The metric equivalents for…
- Universal colitis Ulcerative colitis that involves the entire colon (the large intestine). Ulcerative colitis itself is a…
- Mutation, point A single nucleotide base change in the DNA. A point mutation may consist of the loss of a nucleotide, the…
- Astigmatism Astigmatism: A common form of visual impairment in which part of an image is blurred, due to an irregularity…
- Ventricle, cerebral One of a system of four communicating cavities within the brain that are continuous with the central canal of…
- Ventricles 1, The right ventricle and the left ventricle, the lower two chambers of the heart. 2. Two or more of the…
- Diabetic dermatology See: Diabetic skin disease
- His Histidine. See also: Amino acid symbols
- Heterophyes The replacement of normal tissue of the body by abnormal tissue or by malpositioned normal tissue, a tissue…
- Ascorbic acid Vitamin C, an essential nutrient found mainly in fruits and vegetables. The body requires it to form and…
- Proportional counter A device for measuring radioactivity. More technically, a proportional counter counts the emission of…