nullity

About 0.32 uses per million words.

Meaning

1. noun The state of being null, or void, or invalid.

   nullity of marriage

2. noun A void act; a defective proceeding or one expressly declared by statute to be a nullity.
3. noun The dimension of the kernel of a linear transformation; the dimension of the nullspace of a matrix.

Similar words

nothingness void null invalidity invalid nil invalidation ineffective cancelled nullification

Often followed by

of and in or is by as on was

Word family

nullities