'Cogency' definitions:

Definition of 'cogency'

From: WordNet
noun
Persuasive relevance
noun
The quality of being valid and rigorous [syn: cogency, validity, rigor, rigour]

Definition of 'Cogency'

From: GCIDE
  • Cogency \Co"gen*cy\, n. [See Cogent.] The quality of being cogent; power of compelling conviction; conclusiveness; force. [1913 Webster]
  • An antecedent argument of extreme cogency. --J. H. Newman. [1913 Webster]

Synonyms of 'cogency'

From: Moby Thesaurus