pertinacy Meaning, Definition & Usage

Per"ti*na*cy noun
Etymology
L. pertinere to pertain. See Pertinence.
Definitions
  1. The quality or state of being pertinent; pertinence. Obs.
Per"ti*na*cy noun
Etymology
L. pertinacia, fr. pertinax. See Pertinacious.
Definitions
  1. Pertinacity. Obs. Chaucer.

Webster 1913