'Invalidness' definitions:
Definition of 'invalidness'
(from WordNet)
noun
Illogicality as a consequence of having a conclusion that does not follow from the premisses [syn: invalidity, invalidness]
Definition of 'Invalidness'
From: GCIDE
- Invalidness \In*val"id*ness\, n. Invalidity; as, the invalidness of reasoning. [1913 Webster]