L1

  1. Noun.  mother tongue (someone's native language).
  2. (initialism) .  (space science) first Lagrange point, located further in twoards the primary of a system where a smaller object orbits a larger one, in front of the smaller object, inline with a line drawn through the centres of the larger and smaller objects.

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This entry was last updated on RefTopia from its source on 3/20/2012.