1. Of or pertaining to a telescope; performed by a telescope.
4. (Science: machinery) Having the power of extension by joints sliding one within another, like the tube of a small telescope or a spyglass; especially, 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.
Origin: Cf. F. Telescopique