n.
Pronunciation: ' n ə -l ə -t ē
Function: noun
Inflected Form: plural -ties
Date: 1570
1 a : the quality or state of being null especially : legal invalidity b (1) : NOTHINGNESS also : INSIGNIFICANCE (2) : a mere nothing : NONENTITY
2 : one that is null specifically : an act void of legal effect
3 : the number of elements in a basis of a null-space