telescopic

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Of or relating to a telescope.
• adjective Seen or obtained by means of a telescope.
• adjective Visible only by means of a telescope.
• adjective Capable of discerning distant objects.
• adjective Extensible or compressible by or as if by the sliding of overlapping sections.

from The Century Dictionary.

• Of or pertaining to the telescope or its use; obtained by means of a telescope: as, a telescopic view of the moon.
• That can be seen or discovered by the telescope only: as, telescopic stars.
• Seeing at a great distance; far-seeing.
• Capable of being extended or shut up like a spy-glass; having joints or sections which slide one within another; especially, in machinery, 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 lowered out of sight in action, or in the telescopic jack, a screw-jack in which the lifting head is raised by the action of two screws having reversed threads, one working within the other, and both sinking or telescoping within the base—an arrangement by which greater power is obtained.
• In zoology: Stalked; mounted on an ophthalmite, stem, or peduncle, as an eye.
• Capable of protrusion and retraction, as if jointed like a telescope, or like the joints of a telescope: as, telescopic eyes, feelers, horns, or feet.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Of or pertaining to a telescope; performed by a telescope.
• adjective Seen or discoverable only by a telescope.
• adjective Able to discern objects at a distance; farseeing; far-reaching.
• adjective 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective of, relating to, obtained with, or observable using a telescope
• adjective capable of seeing distant objects
• adjective capable of being extended or compressed by the use of parts that slide over one another
• adjective Seen or discoverable only by means of a telescope.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective visible only with a telescope
• adjective having parts that slide one within another
• adjective capable of discerning distant objects