1. Referring to or pertaining to a telescope (sliding or passing one within another, after the manner of the sections of a small telescope or spyglass); performed by a telescope; that is, enlarging the visual angle under which a distant object is seen, and so magnifying that object.
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 or a telescopic vision.
4. With machinery, having the power of extension by joints sliding one within another, like the tube of a small telescope (optical instrument used in viewing distant objects, as the heavenly bodies) or a spyglass (small telescope for viewing distant terrestrial objects).