The Collaborative International Dictionary of English v.0.48:

Reflecting \Re*flect"ing\, a.
   1. Throwing back light, heat, etc., as a mirror or other
      surface.
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   2. Given to reflection or serious consideration; reflective;
      contemplative; as, a reflecting mind.
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   Reflecting circle, an astronomical instrument for measuring
      angless, like the sextant or Hadley's quadrant, by the
      reflection of light from two plane mirrors which it
      carries, and differing from the sextant chiefly in having
      an entire circle.

   Reflecting galvanometer, a galvanometer in which the
      deflections of the needle are read by means of a mirror
      attached to it, which reflects a ray of light or the image
      of a scale; -- called also mirror galvanometer.

   Reflecting goniometer. See under Goniometer.

   Reflecting telescope. See under Telescope.
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