Pertinacity

Per`ti·nac'i·ty noun [ Confer French pertinacité .] The quality or state of being pertinacious; obstinacy; perseverance; persistency. Macaulay. Syn. -- See Obstinacy .
Found on http://www.encyclo.co.uk/webster/P/63

Pertinacity

• (n.) The quality or state of being pertinacious; obstinacy; perseverance; persistency.
Found on http://thinkexist.com/dictionary/meaning/pertinacity/

pertinacity

quality of holding unyieldingly to a position
Found on http://phrontistery.info/p.html
No exact match found