Hypoxia is a condition characterised by a reduced level of oxygen in body tissues or organs. It can result from inadequate oxygen supply, impaired oxygen utilization, or a combination of both. Oxygen is essential for the normal functioning of cells and tissues, and hypoxia can have various effects on the body depending on its severity and duration.

Unit 7,

Reference: Oxford Concise Medical Dictionary (9th ed) Oxford University Press 2015 ISBN-13: 9780199687817, p771