telescopic

telescopic
    adj 1: visible only with a telescope; "a bright star with a
           telescopic companion"
    2: capable of discerning distant objects; "a telescopic eye";
       "telescopic vision"
    3: having parts that slide one within another; "a telescopic
       antenna"; "a telescopic drinking cup"
    

Telescopic \Tel`e*scop"ic\, Telescopical \Tel`e*scop"ic*al\, a.
   [Cf. F. t['e]lescopique.]
   1. Of or pertaining to a telescope; performed by a telescope.
      [1913 Webster]

   2. Seen or discoverable only by a telescope; as, telescopic
      stars.
      [1913 Webster]

   3. Able to discern objects at a distance; farseeing;
      far-reaching; as, a telescopic eye; telescopic vision.
      [1913 Webster]

   4. Having the power of extension by joints sliding one within
      another, like the tube of a small telescope or a spyglass;
      especially (Mach.), constructed of concentric tubes,
      either stationary, as in the telescopic boiler, or
      movable, as in the telescopic chimney of a war vessel,
      which may be put out of sight by being lowered endwise.
      [1913 Webster]
    

collapsible \collapsible\ adj.
   Capable of collapsing or being collapsed; as, a collapsible
   boat. [Narrower terms: {telescopic}; {tip-up}] Also See:
   {folded}. Antonym: {noncollapsible}.

   Syn: collapsable.
        [WordNet 1.5]