Unable to be seen; out of sight; not visible.
Not appearing on the surface.
Apparently, but not actually, offline.
That is ignored by a person.
To make invisible, to invisiblize.
Capable of seeing distant objects; far-seeing.
Referring to parts being extended or retracted along coinciding axes (with or without direct contact between the parts).
Pertaining to, or carried out by means of, a telescope.
Seen by means of a telescope; only visible through a telescope.
Able to be extended or retracted by the use of parts that slide over one another.