tidal volume

This term is a technical medical and physiological descriptor used primarily in clinical settings, such as pulmonology and anesthesiology. It describes the standard amount of air displaced during normal, relaxed breathing, distinguishing it from the maximum capacity of the lungs.

In a clinical context, it is often contrasted with "inspiratory reserve volume" or "expiratory reserve volume," which refer to the additional air that can be forced in or out. Because it is a specific measurement of volume, it is typically expressed in milliliters (mL) or liters (L).