adjective see libration

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • librational — See libration. * * * …   Universalium

  • librational — adjective Of or pertaining to libration …   Wiktionary

  • librational — lībrāˈtional adjective • • • Main Entry: ↑librate …   Useful english dictionary

  • libration — librational, adj. /luy bray sheuhn/, n. Astron. a real or apparent oscillatory motion, esp. of the moon. [1595 1605; < L libration (s. of libratio) a balancing. See LIBRATE, ION] * * * ▪ astronomy       in astronomy, an oscillation, apparent or… …   Universalium

  • libration — noun Etymology: Latin libration , libratio, from librare to balance, from libra scales Date: 1667 an oscillation in the apparent aspect of a secondary body (as a planet or a satellite) as seen from the primary object around which it revolves •… …   New Collegiate Dictionary

  • Tether satellite — A tether satellite is a satellite connected to another by a thin cable called a tether. The space tether idea had its origin in the late 1800s. The idea became more popular in the 1960s, and subsequently NASA examined the feasibility of the idea… …   Wikipedia

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