- the amount by which the contents fall short of filling a container, as a cask or bottle.
- the quantity of wine, liquor, or the like, remaining in a container that has lost part of its contents by evaporation, leakage, or use.
- the volume of a loaded tank of liquid propellant in excess of the volume of the propellant; the space provided for thermal expansion of the propellant and the accumulation of gases evolved from it.
- the volume by which a liquid container falls short of being full
- the quantity of liquid lost from a container due to leakage or evaporation
- (in customs terminology) the amount of liquid remaining in a container after such loss
- to create ullage in
- to determine the amount of ullage in
- to fill up ullage in
