per·sis·ten·cy 
(pər-sĭstən-sē)
(pər-sĭstən-sē)n.
Persistence.
- orthoepist
- orthoepy
- orthogenesis
- orthogenetic
- orthogenetically
- orthogonal
- orthogonality
- orthogonally
- orthogonal projection
- orthograde
- orthographer
- orthographic
- orthographical
- orthographically
- orthographist
- orthography
- ortholog
- orthologous
- orthologue
- orthomolecular
- orthomyxovirus
- orthopaedics
- orthopedic
- orthopedically
- orthopedics