peak
131peak rate — ˌpeak ˈrate 7 [peak rate] noun the busiest time, which is therefore charged at the highest rate • peak rate phone calls …
132Peak of Eternal Light — (PEL) describes a point on a body within the Solar System which is eternally bathed in sunlight. This is due to both the bodies rotation and the point s altitude. The existence of such peaks was first proposed by Camille Flammarion in 1879, who… …
