voidage

noun 0.684

gallonage

noun 0.570

vacuity

noun 0.555

liquid measure

noun 0.534

fluid measure

noun 0.532

overfill

noun 0.531

water level

noun 0.528

empty space

noun 0.522

glug

noun 0.521

lung volume

noun 0.515

dead space

noun 0.512

liquidus

noun 0.509

bilge

noun 0.503

sullage

noun 0.503

glassful

noun 0.501