părallēlus — Lewis & Short
părallēlus, a, um, and părallēlos, on, adj., = para/llhlos,
parallelos linea,Vitr. 5, 8: circuli paralleli; or absol. paralleli, concentric circles on the celestial globe, parallels of latitude: nostri circulos appellavere, Graeci parallelos, Plin. 6, 33, 39, § 212; Mart. Cap. 8, § 817.