resting tidal volume
rest·ing ti·dal vol·ume
the tidal volume under normal conditions, that is, in the absence of exercise or other conditions that stimulate breathing.
rest·ing ti·dal vol·ume(rest'ing tī'dăl vol'yūm)
The volume of air inspired and expired at rest (i.e., in the absence of circumstances such as exercise that increase the rate or depth of inspirations).