Nullity

Origin

From null and -ity

Full definition of nullity

Noun

1. The state of being null, or void, or invalid.nullity of marriage
2. (legal) A void act; a defective proceeding or one expressly declared by statute to be a nullity.
3. (math) The difference between the rank of a matrix and the number of columns it has; the dimension of the nullspace of a matrix.

Derived terms

• decree of nullity