2. Seen or discoverable only by a telescope; as, telescopic
stars.
3. Able to discern objects at a distance; farseeing;
far-reaching; as, a telescopic eye; telescopic vision.
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.