the GNU version of the Collaborative International Dictionary of English
n. The quality or state of being void; emptiness; vacuity; nullity; want of substantiality.
The Century Dictionary and Cyclopedia
n. The state or character of being void,
Word Usage
"Thus, although voidness does not correspond to the truly findably existent category voidness, which the name voidness conceptualizes, nevertheless the name voidness conventionally refers to voidness."