forced vital capacity is the maximum volume of gas that can be expired forcefully after a maximum inspiration.
Forced Vital Capacity (FVC) is the volume of air resulting from the forced expiratory flow test in which a person first inspires maximally to the total lung capacity, then exhales as rapidly and as completely as possible.
The maximal amount of air that can be exhaled after a maximum inspiration. Forced vital capacity is a key measure of lung function.
The maximal volume of air that can be exhaled as forcibly and rapidly as possible after a maximal inspiration.
The amount of air that can be forcefully expelled following a maximal inspiration