— ullaged , adj.
/ul"ij/ , n.
1. the amount by which the contents fall short of filling a container, as a cask or bottle.
2. the quantity of wine, liquor, or the like, remaining in a container that has lost part of its contents by evaporation, leakage, or use.
3. Rocketry. 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.
[ 1400-50; late ME ulliage; OF ouillage, ( h ) eullage wine needed to fill a cask, equiv. to ( a ) ouill ( er ) to fill (a cask) (deriv. of ouil eye, hole oculus ) + -age -AGE ]