1. (astronomy) a real or apparent slow oscillation of a moon or satellite
   "the libration of the moon"

Derived forms: librations

See also: librate

Type of: oscillation, variation

Encyclopedia: Libration

• penoche
• penological
• penologist
• penology
• penoncel
• penpusher
• Pensacola
• pensile
• pension
• pension account
• pension fund
• pension off
• pension plan
• pensionable
• pensionary
• pensioner
• pensive
• pensively
• pensiveness
• Penstemon
• Penstemon barbatus
• Penstemon centranthifolius
• Penstemon cyananthus
• Penstemon davidsonii
• Penstemon deustus