TELESCOPIC
telescopic
(adjective) having parts that slide one within another; “a telescopic antenna”; “a telescopic drinking cup”
telescopic
(adjective) capable of discerning distant objects; “a telescopic eye”; “telescopic vision”
telescopic
(adjective) visible only with a telescope; “a bright star with a telescopic companion”
Source: WordNet® 3.1
Etymology
Adjective
telescopic (comparative more telescopic, superlative most telescopic)
Pertaining to, or carried out by means of, a telescope. [from 17th c.]
(chiefly, astronomy) Seen by means of a telescope; only visible through a telescope. [from 17th c.]
Capable of seeing distant objects; far-seeing. [from 18th c.]
Able to be extended or retracted by the use of parts that slide over one another. [from 19th c.]
Referring to parts being extended or retracted along coinciding axes (with or without direct contact between the parts). [from 20th c.]
Source: Wiktionary
Tel`e*scop"ic, Tel`e*scop"ic*al, a. Etym: [Cf. F. télescopique.]
1. Of or pertaining to a telescope; performed by a telescope.
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.
Source: Webster’s Unabridged Dictionary 1913 Edition