Pressure-time refers to the relationship between the pressure exerted on a surface and the duration of that pressure. It is often used in various fields, such as physics and engineering, to analyze how materials respond to forces over time. Understanding this relationship helps in designing structures and materials that can withstand specific loads without failing. In medical contexts, pressure-time is important for assessing conditions like pressure ulcers. These injuries occur when sustained pressure on the skin reduces blood flow, leading to tissue damage. Monitoring pressure over time can help prevent these injuries, especially in patients with limited mobility.